79599021513 has 16 divisors (see below), whose sum is σ = 116737263552. Its totient is φ = 48241828800.

The previous prime is 79599021503. The next prime is 79599021521. The reversal of 79599021513 is 31512099597.

It is not a de Polignac number, because 79599021513 - 2²¹ = 79596924361 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79599021503) 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 in 15 ways as a sum of consecutive naturals, for example, 9963328 + ... + 9971313.

It is an arithmetic number, because the mean of its divisors is an integer number (7296078972).

Almost surely, 2^79599021513 is an apocalyptic number.

It is an amenable number.

79599021513 is a deficient number, since it is larger than the sum of its proper divisors (37138242039).

79599021513 is a wasteful number, since it uses less digits than its factorization.

79599021513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19934677 (or 19934655 counting only the distinct ones).

The product of its (nonzero) digits is 765450, while the sum is 51.

The spelling of 79599021513 in words is "seventy-nine billion, five hundred ninety-nine million, twenty-one thousand, five hundred thirteen".