12379921568 has 24 divisors (see below), whose sum is σ = 27854824032. Its totient is φ = 5305680576.

The previous prime is 12379921559. The next prime is 12379921571. The reversal of 12379921568 is 86512997321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27633530 + ... + 27633977.

It is an arithmetic number, because the mean of its divisors is an integer number (1160617668).

Almost surely, 2^12379921568 is an apocalyptic number.

It is an amenable number.

12379921568 is an abundant number, since it is smaller than the sum of its proper divisors (15474902464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12379921568 is an equidigital number, since it uses as much as digits as its factorization.

12379921568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55267524 (or 55267516 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 53.

The spelling of 12379921568 in words is "twelve billion, three hundred seventy-nine million, nine hundred twenty-one thousand, five hundred sixty-eight".