79339140864 has 216 divisors, whose sum is σ = 241241342160. Its totient is φ = 25007947776.

The previous prime is 79339140851. The next prime is 79339140887. The reversal of 79339140864 is 46804193397.

It is a happy number.

79339140864 is a `hidden beast` number, since 7 + 93 + 3 + 91 + 408 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 79339140864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29459902 + ... + 29462594.

Almost surely, 2^79339140864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79339140864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120620671080).

79339140864 is an abundant number, since it is smaller than the sum of its proper divisors (161902201296).

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

79339140864 is a wasteful number, since it uses less digits than its factorization.

79339140864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407 (or 3390 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 79339140864 in words is "seventy-nine billion, three hundred thirty-nine million, one hundred forty thousand, eight hundred sixty-four".