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79936431275 = 5215271209381
BaseRepresentation
bin100101001110010010…
…1010010010010101011
321122022220111110002202
41022130211102102223
52302202211300100
6100420003050415
75526620312021
oct1123445222253
9248286443082
1079936431275
11309a0038a48
12135aa670a0b
1376cbc0869c
143c2454c711
15212cb137d5
hex129c9524ab

79936431275 has 12 divisors (see below), whose sum is σ = 99128139024. Its totient is φ = 63944652000.

The previous prime is 79936431233. The next prime is 79936431283. The reversal of 79936431275 is 57213463997.

It is not a de Polignac number, because 79936431275 - 234 = 62756562091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79936431275.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277085 + ... + 486465.

It is an arithmetic number, because the mean of its divisors is an integer number (8260678252).

Almost surely, 279936431275 is an apocalyptic number.

79936431275 is a deficient number, since it is larger than the sum of its proper divisors (19191707749).

79936431275 is a wasteful number, since it uses less digits than its factorization.

79936431275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224662 (or 224657 counting only the distinct ones).

The product of its digits is 8573040, while the sum is 56.

The spelling of 79936431275 in words is "seventy-nine billion, nine hundred thirty-six million, four hundred thirty-one thousand, two hundred seventy-five".

Divisors: 1 5 25 15271 76355 209381 381775 1046905 5234525 3197457251 15987286255 79936431275