12638875125253 has 4 divisors (see below), whose sum is σ = 13611096288748. Its totient is φ = 11666653961760.

The previous prime is 12638875125251. The next prime is 12638875125257. The reversal of 12638875125253 is 35252157883621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 971472410689 + 11667402714564 = 985633^2 + 3415758^2 .

It is a cyclic number.

It is not a de Polignac number, because 12638875125253 - 2¹ = 12638875125251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638875125251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486110581728 + ... + 486110581753.

It is an arithmetic number, because the mean of its divisors is an integer number (3402774072187).

Almost surely, 2^{12638875125253} is an apocalyptic number.

12638875125253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12638875125253 is a deficient number, since it is larger than the sum of its proper divisors (972221163495).

12638875125253 is an equidigital number, since it uses as much as digits as its factorization.

12638875125253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972221163494.

The product of its digits is 24192000, while the sum is 58.

The spelling of 12638875125253 in words is "twelve trillion, six hundred thirty-eight billion, eight hundred seventy-five million, one hundred twenty-five thousand, two hundred fifty-three".