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79712552269 = 721639980287
BaseRepresentation
bin100101000111100111…
…1010000010101001101
321121202022020012211201
41022033033100111031
52301222403133034
6100341444345501
75521231341400
oct1121717202515
9247668205751
1079712552269
1130895726379
12135476a5291
1376947104bc
143c02911d37
15211813e014
hex128f3d054d

79712552269 has 12 divisors (see below), whose sum is σ = 93295732224. Its totient is φ = 67905865944.

The previous prime is 79712552267. The next prime is 79712552273. The reversal of 79712552269 is 96225521797.

It is not a de Polignac number, because 79712552269 - 21 = 79712552267 is a prime.

It is a super-2 number, since 2×797125522692 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79712552267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4982157 + ... + 4998130.

It is an arithmetic number, because the mean of its divisors is an integer number (7774644352).

Almost surely, 279712552269 is an apocalyptic number.

It is an amenable number.

79712552269 is a deficient number, since it is larger than the sum of its proper divisors (13583179955).

79712552269 is a wasteful number, since it uses less digits than its factorization.

79712552269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9980464 (or 9980457 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 55.

The spelling of 79712552269 in words is "seventy-nine billion, seven hundred twelve million, five hundred fifty-two thousand, two hundred sixty-nine".

Divisors: 1 7 49 163 1141 7987 9980287 69862009 489034063 1626786781 11387507467 79712552269