12657615272 has 16 divisors (see below), whose sum is σ = 23763742740. Its totient is φ = 6320617216.

The previous prime is 12657615259. The next prime is 12657615283. The reversal of 12657615272 is 27251675621.

It can be written as a sum of positive squares in 2 ways, for example, as 12650400676 + 7214596 = 112474^2 + 2686^2 .

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, 1017233 + ... + 1029600.

Almost surely, 2^12657615272 is an apocalyptic number.

It is an amenable number.

12657615272 is a deficient number, since it is larger than the sum of its proper divisors (11106127468).

12657615272 is a wasteful number, since it uses less digits than its factorization.

12657615272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047612 (or 2047608 counting only the distinct ones).

The product of its digits is 352800, while the sum is 44.

The spelling of 12657615272 in words is "twelve billion, six hundred fifty-seven million, six hundred fifteen thousand, two hundred seventy-two".