79508663564 has 18 divisors (see below), whose sum is σ = 151792837644. Its totient is φ = 36139451440.

The previous prime is 79508663561. The next prime is 79508663581. The reversal of 79508663564 is 46536680597.

It is not an unprimeable number, because it can be changed into a prime (79508663561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1849142 + ... + 1891650.

Almost surely, 2^79508663564 is an apocalyptic number.

It is an amenable number.

79508663564 is a deficient number, since it is larger than the sum of its proper divisors (72284174080).

79508663564 is an frugal number, since it uses more digits than its factorization.

79508663564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85033 (or 42522 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 59.

The spelling of 79508663564 in words is "seventy-nine billion, five hundred eight million, six hundred sixty-three thousand, five hundred sixty-four".