979660659813 has 16 divisors (see below), whose sum is σ = 1486915785216. Its totient is φ = 567919222640.

The previous prime is 979660659799. The next prime is 979660659851. The reversal of 979660659813 is 318956066979.

It is not a de Polignac number, because 979660659813 - 2⁵ = 979660659781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979660659853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645361995 + ... + 645363512.

It is an arithmetic number, because the mean of its divisors is an integer number (92932236576).

Almost surely, 2^979660659813 is an apocalyptic number.

It is an amenable number.

979660659813 is a deficient number, since it is larger than the sum of its proper divisors (507255125403).

979660659813 is a wasteful number, since it uses less digits than its factorization.

979660659813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290725544.

The product of its (nonzero) digits is 132269760, while the sum is 69.

The spelling of 979660659813 in words is "nine hundred seventy-nine billion, six hundred sixty million, six hundred fifty-nine thousand, eight hundred thirteen".