79397908644 has 48 divisors (see below), whose sum is σ = 189219421440. Its totient is φ = 25903038720.

The previous prime is 79397908633. The next prime is 79397908649. The reversal of 79397908644 is 44680979397.

It is not an unprimeable number, because it can be changed into a prime (79397908649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107509 + ... + 412739.

It is an arithmetic number, because the mean of its divisors is an integer number (3942071280).

Almost surely, 2^79397908644 is an apocalyptic number.

It is an amenable number.

79397908644 is an abundant number, since it is smaller than the sum of its proper divisors (109821512796).

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

79397908644 is a wasteful number, since it uses less digits than its factorization.

79397908644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305700 (or 305698 counting only the distinct ones).

The product of its (nonzero) digits is 82301184, while the sum is 66.

The spelling of 79397908644 in words is "seventy-nine billion, three hundred ninety-seven million, nine hundred eight thousand, six hundred forty-four".