12657638059 has 24 divisors (see below), whose sum is σ = 14051822400. Its totient is φ = 11392613760.

The previous prime is 12657638041. The next prime is 12657638069. The reversal of 12657638059 is 95083675621.

It is not a de Polignac number, because 12657638059 - 2¹⁵ = 12657605291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12657637997 and 12657638015.

It is not an unprimeable number, because it can be changed into a prime (12657638069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6615687 + ... + 6617599.

It is an arithmetic number, because the mean of its divisors is an integer number (585492600).

Almost surely, 2^12657638059 is an apocalyptic number.

12657638059 is a deficient number, since it is larger than the sum of its proper divisors (1394184341).

12657638059 is a wasteful number, since it uses less digits than its factorization.

12657638059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451 (or 2440 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 12657638059 in words is "twelve billion, six hundred fifty-seven million, six hundred thirty-eight thousand, fifty-nine".