79580813013 has 40 divisors (see below), whose sum is σ = 128082398136. Its totient is φ = 48950697600.

The previous prime is 79580812973. The next prime is 79580813029. The reversal of 79580813013 is 31031808597.

It can be written as a sum of positive squares in 4 ways, for example, as 418488849 + 79162324164 = 20457^2 + 281358^2 .

It is not a de Polignac number, because 79580813013 - 2¹⁷ = 79580681941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79580813013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79580813513) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 2491323 + ... + 2523063.

Almost surely, 2^79580813013 is an apocalyptic number.

It is an amenable number.

79580813013 is a deficient number, since it is larger than the sum of its proper divisors (48501585123).

79580813013 is a wasteful number, since it uses less digits than its factorization.

79580813013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34147 (or 34138 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 79580813013 in words is "seventy-nine billion, five hundred eighty million, eight hundred thirteen thousand, thirteen".