79491761808 has 40 divisors (see below), whose sum is σ = 205541049888. Its totient is φ = 26473082112.

The previous prime is 79491761801. The next prime is 79491761821. The reversal of 79491761808 is 80816719497.

It is not an unprimeable number, because it can be changed into a prime (79491761801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702166 + ... + 807477.

Almost surely, 2^79491761808 is an apocalyptic number.

It is an amenable number.

79491761808 is an abundant number, since it is smaller than the sum of its proper divisors (126049288080).

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

79491761808 is a wasteful number, since it uses less digits than its factorization.

79491761808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510751 (or 1510745 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 60.

The spelling of 79491761808 in words is "seventy-nine billion, four hundred ninety-one million, seven hundred sixty-one thousand, eight hundred eight".