12957181493972 has 24 divisors (see below), whose sum is σ = 22705926413856. Its totient is φ = 6469775674848.

The previous prime is 12957181493959. The next prime is 12957181494001. The reversal of 12957181493972 is 27939418175921.

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, 30531143 + ... + 30952625.

It is an arithmetic number, because the mean of its divisors is an integer number (946080267244).

Almost surely, 2^{12957181493972} is an apocalyptic number.

It is an amenable number.

12957181493972 is a deficient number, since it is larger than the sum of its proper divisors (9748744919884).

12957181493972 is a wasteful number, since it uses less digits than its factorization.

12957181493972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431927 (or 431925 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 68.

The spelling of 12957181493972 in words is "twelve trillion, nine hundred fifty-seven billion, one hundred eighty-one million, four hundred ninety-three thousand, nine hundred seventy-two".