12638763826257 has 16 divisors (see below), whose sum is σ = 17001014277888. Its totient is φ = 8351179710720.

The previous prime is 12638763826229. The next prime is 12638763826289. The reversal of 12638763826257 is 75262836783621.

It is not a de Polignac number, because 12638763826257 - 2⁶ = 12638763826193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12638763826457) by changing a digit.

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, 39263032 + ... + 39583622.

It is an arithmetic number, because the mean of its divisors is an integer number (1062563392368).

Almost surely, 2^{12638763826257} is an apocalyptic number.

It is an amenable number.

12638763826257 is a deficient number, since it is larger than the sum of its proper divisors (4362250451631).

12638763826257 is a wasteful number, since it uses less digits than its factorization.

12638763826257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437000.

The product of its digits is 243855360, while the sum is 66.

The spelling of 12638763826257 in words is "twelve trillion, six hundred thirty-eight billion, seven hundred sixty-three million, eight hundred twenty-six thousand, two hundred fifty-seven".