12638876263764 has 36 divisors (see below), whose sum is σ = 30309299362944. Its totient is φ = 4099094999136.

The previous prime is 12638876263733. The next prime is 12638876263813. The reversal of 12638876263764 is 46736267883621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384658404 + ... + 384691259.

It is an arithmetic number, because the mean of its divisors is an integer number (841924982304).

Almost surely, 2^{12638876263764} is an apocalyptic number.

It is an amenable number.

12638876263764 is an abundant number, since it is smaller than the sum of its proper divisors (17670423099180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12638876263764 is a wasteful number, since it uses less digits than its factorization.

12638876263764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769349744 (or 769349705 counting only the distinct ones).

The product of its digits is 585252864, while the sum is 69.

The spelling of 12638876263764 in words is "twelve trillion, six hundred thirty-eight billion, eight hundred seventy-six million, two hundred sixty-three thousand, seven hundred sixty-four".