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79998000015 = 3543263471589
BaseRepresentation
bin100101010000001000…
…0001001101110001111
321122111012100110112110
41022200100021232033
52302313442000030
6100430042435103
75531265531513
oct1124020115617
9248435313473
1079998000015
1130a218704aa
1213607202a93
13770b8b46ab
143c2c7b8143
1521332261b0
hex12a0409b8f

79998000015 has 32 divisors (see below), whose sum is σ = 131471746560. Its totient is φ = 41514834816.

The previous prime is 79998000001. The next prime is 79998000023. The reversal of 79998000015 is 51000089997.

It is not a de Polignac number, because 79998000015 - 218 = 79997737871 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66160 + ... + 405429.

It is an arithmetic number, because the mean of its divisors is an integer number (4108492080).

Almost surely, 279998000015 is an apocalyptic number.

79998000015 is a deficient number, since it is larger than the sum of its proper divisors (51473746545).

79998000015 is a wasteful number, since it uses less digits than its factorization.

79998000015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471903.

The product of its (nonzero) digits is 204120, while the sum is 48.

The spelling of 79998000015 in words is "seventy-nine billion, nine hundred ninety-eight million, fifteen", and thus it is an aban number.

Divisors: 1 3 5 15 43 129 215 263 645 789 1315 3945 11309 33927 56545 169635 471589 1414767 2357945 7073835 20278327 60834981 101391635 124027907 304174905 372083721 620139535 1860418605 5333200001 15999600003 26666000005 79998000015