12638765375 has 32 divisors (see below), whose sum is σ = 16155412416. Its totient is φ = 9868560000.

The previous prime is 12638765369. The next prime is 12638765431. The reversal of 12638765375 is 57356783621.

12638765375 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12638765375 - 2⁸ = 12638765119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 992549 + ... + 1005201.

It is an arithmetic number, because the mean of its divisors is an integer number (504856638).

Almost surely, 2^12638765375 is an apocalyptic number.

12638765375 is a deficient number, since it is larger than the sum of its proper divisors (3516647041).

12638765375 is a wasteful number, since it uses less digits than its factorization.

12638765375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12860 (or 12850 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 53.

The spelling of 12638765375 in words is "twelve billion, six hundred thirty-eight million, seven hundred sixty-five thousand, three hundred seventy-five".