79719698634 has 16 divisors (see below), whose sum is σ = 159818118240. Its totient is φ = 26510112720.

The previous prime is 79719698593. The next prime is 79719698657. The reversal of 79719698634 is 43689691797.

It is a Curzon number.

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, 15777304 + ... + 15782355.

It is an arithmetic number, because the mean of its divisors is an integer number (9988632390).

Almost surely, 2^79719698634 is an apocalyptic number.

79719698634 is an abundant number, since it is smaller than the sum of its proper divisors (80098419606).

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

79719698634 is a wasteful number, since it uses less digits than its factorization.

79719698634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31560085.

The product of its digits is 123451776, while the sum is 69.

The spelling of 79719698634 in words is "seventy-nine billion, seven hundred nineteen million, six hundred ninety-eight thousand, six hundred thirty-four".