79108312644 has 27 divisors (see below), whose sum is σ = 199972500637. Its totient is φ = 26368875024.

The previous prime is 79108312627. The next prime is 79108312691. The reversal of 79108312644 is 44621380197.

The square root of 79108312644 is 281262.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2441348100 + 76666964544 = 49410^2 + 276888^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79108312644.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1664134 + ... + 1711010.

Almost surely, 2^79108312644 is an apocalyptic number.

79108312644 is the 281262-nd square number.

It is an amenable number.

79108312644 is an abundant number, since it is smaller than the sum of its proper divisors (120864187993).

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

79108312644 is an frugal number, since it uses more digits than its factorization.

79108312644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93764 (or 46882 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 79108312644 in words is "seventy-nine billion, one hundred eight million, three hundred twelve thousand, six hundred forty-four".