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79355997105 = 3572119815213
BaseRepresentation
bin100100111100111111…
…1000110101110110001
321120211110022100002220
41021321333012232301
52300010113401410
6100242230231253
75506341563100
oct1117177065661
9246743270086
1079355997105
1130722434190
12134681b5529
1376388a0708
143bab41a037
1520e6bad070
hex1279fc6bb1

79355997105 has 48 divisors (see below), whose sum is σ = 161126553024. Its totient is φ = 32979112320.

The previous prime is 79355997053. The next prime is 79355997107. The reversal of 79355997105 is 50179955397.

It is not a de Polignac number, because 79355997105 - 217 = 79355866033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79355997107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4899522 + ... + 4915691.

It is an arithmetic number, because the mean of its divisors is an integer number (3356803188).

Almost surely, 279355997105 is an apocalyptic number.

It is an amenable number.

79355997105 is an abundant number, since it is smaller than the sum of its proper divisors (81770555919).

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

79355997105 is a wasteful number, since it uses less digits than its factorization.

79355997105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9815246 (or 9815239 counting only the distinct ones).

The product of its (nonzero) digits is 13395375, while the sum is 60.

The spelling of 79355997105 in words is "seventy-nine billion, three hundred fifty-five million, nine hundred ninety-seven thousand, one hundred five".

Divisors: 1 3 5 7 11 15 21 33 35 49 55 77 105 147 165 231 245 385 539 735 1155 1617 2695 8085 9815213 29445639 49076065 68706491 107967343 147228195 206119473 323902029 343532455 480945437 539836715 755771401 1030597365 1442836311 1619510145 2267314203 2404727185 3778857005 5290399807 7214181555 11336571015 15871199421 26451999035 79355997105