Base | Representation |
---|---|

bin | 1001011101000000001101… |

… | …11001100111000010010010 |

3 | 2201121021211120010200200220 |

4 | 10232200012321213002102 |

5 | 10211041311403244114 |

6 | 112113433002453510 |

7 | 4243603003062021 |

oct | 456400671470222 |

9 | 81537746120626 |

10 | 20787757478034 |

11 | 6695047184888 |

12 | 23b8981b04296 |

13 | b7a37aaa3b71 |

14 | 51c1c06b48b8 |

15 | 260b0d49e0a9 |

hex | 12e806e67092 |

20787757478034 has 16 divisors (see below), whose sum is σ = 42589551906720. Its totient is φ = 6760246334240.

The previous prime is 20787757478027. The next prime is 20787757478041. The reversal of 20787757478034 is 43087475778702.

It is an interprime number because it is at equal distance from previous prime (20787757478027) and next prime (20787757478041).

It is a self number, because there is not a number *n* which added to its sum of digits gives 20787757478034.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42251539344 + ... + 42251539835.

It is an arithmetic number, because the mean of its divisors is an integer number (2661846994170).

Almost surely, 2^{20787757478034} is an apocalyptic number.

20787757478034 is an abundant number, since it is smaller than the sum of its proper divisors (21801794428686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20787757478034 is a wasteful number, since it uses less digits than its factorization.

20787757478034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84503079225.

The product of its (nonzero) digits is 516311040, while the sum is 69.

The spelling of 20787757478034 in words is "twenty trillion, seven hundred eighty-seven billion, seven hundred fifty-seven million, four hundred seventy-eight thousand, thirty-four".

Divisors: 1 2 3 6 41 82 123 246 84503079179 169006158358 253509237537 507018475074 3464626246339 6929252492678 10393878739017 20787757478034

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