79154129028 has 24 divisors (see below), whose sum is σ = 198900119488. Its totient is φ = 24355116576.

The previous prime is 79154129017. The next prime is 79154129059. The reversal of 79154129028 is 82092145197.

It is a happy number.

It is a super-2 number, since 2×79154129028² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253698976 + ... + 253699287.

Almost surely, 2^79154129028 is an apocalyptic number.

79154129028 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

79154129028 is an abundant number, since it is smaller than the sum of its proper divisors (119745990460).

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

79154129028 is a wasteful number, since it uses less digits than its factorization.

79154129028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507398283 (or 507398281 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 79154129028 in words is "seventy-nine billion, one hundred fifty-four million, one hundred twenty-nine thousand, twenty-eight".