12657398352 has 40 divisors (see below), whose sum is σ = 32723232960. Its totient is φ = 4215912960.

The previous prime is 12657398329. The next prime is 12657398419. The reversal of 12657398352 is 25389375621.

It is a junction number, because it is equal to n+sod(n) for n = 12657398295 and 12657398304.

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, 36649 + ... + 163272.

It is an arithmetic number, because the mean of its divisors is an integer number (818080824).

Almost surely, 2^12657398352 is an apocalyptic number.

12657398352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12657398352 is an abundant number, since it is smaller than the sum of its proper divisors (20065834608).

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

12657398352 is a wasteful number, since it uses less digits than its factorization.

12657398352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201251 (or 201245 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The spelling of 12657398352 in words is "twelve billion, six hundred fifty-seven million, three hundred ninety-eight thousand, three hundred fifty-two".