12957319392 has 48 divisors (see below), whose sum is σ = 34570568592. Its totient is φ = 4248299520.

The previous prime is 12957319367. The next prime is 12957319411. The reversal of 12957319392 is 29391375921.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1100473 + ... + 1112184.

It is an arithmetic number, because the mean of its divisors is an integer number (720220179).

Almost surely, 2^12957319392 is an apocalyptic number.

12957319392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12957319392 is an abundant number, since it is smaller than the sum of its proper divisors (21613249200).

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

12957319392 is a wasteful number, since it uses less digits than its factorization.

12957319392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212731 (or 2212723 counting only the distinct ones).

The product of its digits is 918540, while the sum is 51.

The spelling of 12957319392 in words is "twelve billion, nine hundred fifty-seven million, three hundred nineteen thousand, three hundred ninety-two".