12638875375 has 16 divisors (see below), whose sum is σ = 18026648640. Its totient is φ = 8666656800.

The previous prime is 12638875363. The next prime is 12638875397. The reversal of 12638875375 is 57357883621.

It is not a de Polignac number, because 12638875375 - 2⁵ = 12638875343 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7221340 + ... + 7223089.

It is an arithmetic number, because the mean of its divisors is an integer number (1126665540).

Almost surely, 2^12638875375 is an apocalyptic number.

12638875375 is a deficient number, since it is larger than the sum of its proper divisors (5387773265).

12638875375 is an equidigital number, since it uses as much as digits as its factorization.

12638875375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14444451 (or 14444441 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 55.

The spelling of 12638875375 in words is "twelve billion, six hundred thirty-eight million, eight hundred seventy-five thousand, three hundred seventy-five".