679512564939 has 32 divisors (see below), whose sum is σ = 981156757504. Its totient is φ = 415833730560.

The previous prime is 679512564931. The next prime is 679512564943. The reversal of 679512564939 is 939465215976.

It is not a de Polignac number, because 679512564939 - 2³ = 679512564931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 679512564939.

It is not an unprimeable number, because it can be changed into a prime (679512564931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5118774 + ... + 5249844.

It is an arithmetic number, because the mean of its divisors is an integer number (30661148672).

Almost surely, 2^679512564939 is an apocalyptic number.

679512564939 is a deficient number, since it is larger than the sum of its proper divisors (301644192565).

679512564939 is a wasteful number, since it uses less digits than its factorization.

679512564939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131827.

The product of its digits is 110224800, while the sum is 66.

The spelling of 679512564939 in words is "six hundred seventy-nine billion, five hundred twelve million, five hundred sixty-four thousand, nine hundred thirty-nine".