78913964715 has 32 divisors (see below), whose sum is σ = 130760103936. Its totient is φ = 40597044480.

The previous prime is 78913964707. The next prime is 78913964719. The reversal of 78913964715 is 51746931987.

It is not a de Polignac number, because 78913964715 - 2³ = 78913964707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78913964719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133642 + ... + 419151.

It is an arithmetic number, because the mean of its divisors is an integer number (4086253248).

Almost surely, 2^78913964715 is an apocalyptic number.

78913964715 is a deficient number, since it is larger than the sum of its proper divisors (51846139221).

78913964715 is a wasteful number, since it uses less digits than its factorization.

78913964715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553139.

The product of its digits is 11430720, while the sum is 60.

The spelling of 78913964715 in words is "seventy-eight billion, nine hundred thirteen million, nine hundred sixty-four thousand, seven hundred fifteen".