12638888875 has 8 divisors (see below), whose sum is σ = 15773333472. Its totient is φ = 10111111000.

The previous prime is 12638888851. The next prime is 12638888879. The reversal of 12638888875 is 57888883621.

It is a de Polignac number, because none of the positive numbers 2^k-12638888875 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12638888879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50555431 + ... + 50555680.

It is an arithmetic number, because the mean of its divisors is an integer number (1971666684).

Almost surely, 2^12638888875 is an apocalyptic number.

12638888875 is a deficient number, since it is larger than the sum of its proper divisors (3134444597).

12638888875 is an equidigital number, since it uses as much as digits as its factorization.

12638888875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101111126 (or 101111116 counting only the distinct ones).

The product of its digits is 41287680, while the sum is 64.

The spelling of 12638888875 in words is "twelve billion, six hundred thirty-eight million, eight hundred eighty-eight thousand, eight hundred seventy-five".