79617468668 has 6 divisors (see below), whose sum is σ = 139330570176. Its totient is φ = 39808734332.

The previous prime is 79617468641. The next prime is 79617468683. The reversal of 79617468668 is 86686471697.

It is a junction number, because it is equal to n+sod(n) for n = 79617468598 and 79617468607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9952183580 + ... + 9952183587.

It is an arithmetic number, because the mean of its divisors is an integer number (23221761696).

Almost surely, 2^79617468668 is an apocalyptic number.

It is an amenable number.

79617468668 is a deficient number, since it is larger than the sum of its proper divisors (59713101508).

79617468668 is a wasteful number, since it uses less digits than its factorization.

79617468668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19904367171 (or 19904367169 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 68.

The spelling of 79617468668 in words is "seventy-nine billion, six hundred seventeen million, four hundred sixty-eight thousand, six hundred sixty-eight".