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79516438968 = 233139215311071
BaseRepresentation
bin100101000001110001…
…1001001000110111000
321121020122012121222010
41022003203021012320
52300322202021333
6100310201125520
75513330402451
oct1120343110670
9247218177863
1079516438968
11307a4a5856a
12134b1a898a0
137662bb7325
143bc4862128
152105d01563
hex12838c91b8

79516438968 has 64 divisors (see below), whose sum is σ = 200332339200. Its totient is φ = 26300194560.

The previous prime is 79516438949. The next prime is 79516439027. The reversal of 79516438968 is 86983461597.

It is a junction number, because it is equal to n+sod(n) for n = 79516438899 and 79516438908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7176873 + ... + 7187943.

It is an arithmetic number, because the mean of its divisors is an integer number (3130192800).

Almost surely, 279516438968 is an apocalyptic number.

It is an amenable number.

79516438968 is an abundant number, since it is smaller than the sum of its proper divisors (120815900232).

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

79516438968 is a wasteful number, since it uses less digits than its factorization.

79516438968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13372 (or 13368 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 66.

The spelling of 79516438968 in words is "seventy-nine billion, five hundred sixteen million, four hundred thirty-eight thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 24 139 278 417 556 834 1112 1668 2153 3336 4306 6459 8612 11071 12918 17224 22142 25836 33213 44284 51672 66426 88568 132852 265704 299267 598534 897801 1197068 1538869 1795602 2394136 3077738 3591204 4616607 6155476 7182408 9233214 12310952 18466428 23835863 36932856 47671726 71507589 95343452 143015178 190686904 286030356 572060712 3313184957 6626369914 9939554871 13252739828 19879109742 26505479656 39758219484 79516438968