78974705928492 has 36 divisors (see below), whose sum is σ = 217778734531176. Its totient is φ = 23931729069120.

The previous prime is 78974705928457. The next prime is 78974705928493. The reversal of 78974705928492 is 29482950747987.

78974705928492 is a `hidden beast` number, since 7 + 8 + 9 + 7 + 4 + 70 + 59 + 2 + 8 + 492 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (78974705928493) 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, 99715537393 + ... + 99715538184.

Almost surely, 2^{78974705928492} is an apocalyptic number.

It is an amenable number.

78974705928492 is an abundant number, since it is smaller than the sum of its proper divisors (138804028602684).

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

78974705928492 is a wasteful number, since it uses less digits than its factorization.

78974705928492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199431075598 (or 199431075593 counting only the distinct ones).

The product of its (nonzero) digits is 5120962560, while the sum is 81.

The spelling of 78974705928492 in words is "seventy-eight trillion, nine hundred seventy-four billion, seven hundred five million, nine hundred twenty-eight thousand, four hundred ninety-two".