79569993028 has 12 divisors (see below), whose sum is σ = 139845118140. Its totient is φ = 39614244992.

The previous prime is 79569993007. The next prime is 79569993067. The reversal of 79569993028 is 82039996597.

It can be written as a sum of positive squares in 2 ways, for example, as 33014163204 + 46555829824 = 181698^2 + 215768^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42686833 + ... + 42688696.

It is an arithmetic number, because the mean of its divisors is an integer number (11653759845).

Almost surely, 2^79569993028 is an apocalyptic number.

It is an amenable number.

79569993028 is a deficient number, since it is larger than the sum of its proper divisors (60275125112).

79569993028 is a wasteful number, since it uses less digits than its factorization.

79569993028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85375766 (or 85375764 counting only the distinct ones).

The product of its (nonzero) digits is 66134880, while the sum is 67.

The spelling of 79569993028 in words is "seventy-nine billion, five hundred sixty-nine million, nine hundred ninety-three thousand, twenty-eight".