79521965524 has 6 divisors (see below), whose sum is σ = 139163439674. Its totient is φ = 39760982760.

The previous prime is 79521965521. The next prime is 79521965539. The reversal of 79521965524 is 42556912597.

It can be written as a sum of positive squares in only one way, i.e., 52253388100 + 27268577424 = 228590^2 + 165132^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79521965521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9940245687 + ... + 9940245694.

Almost surely, 2^79521965524 is an apocalyptic number.

It is an amenable number.

79521965524 is a deficient number, since it is larger than the sum of its proper divisors (59641474150).

79521965524 is a wasteful number, since it uses less digits than its factorization.

79521965524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19880491385 (or 19880491383 counting only the distinct ones).

The product of its digits is 6804000, while the sum is 55.

The spelling of 79521965524 in words is "seventy-nine billion, five hundred twenty-one million, nine hundred sixty-five thousand, five hundred twenty-four".