12637809438 has 16 divisors (see below), whose sum is σ = 25340599440. Its totient is φ = 4201773056.

The previous prime is 12637809427. The next prime is 12637809467. The reversal of 12637809438 is 83490873621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2704995 + ... + 2709662.

It is an arithmetic number, because the mean of its divisors is an integer number (1583787465).

Almost surely, 2^12637809438 is an apocalyptic number.

12637809438 is an abundant number, since it is smaller than the sum of its proper divisors (12702790002).

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

12637809438 is a wasteful number, since it uses less digits than its factorization.

12637809438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5415051.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 12637809438 in words is "twelve billion, six hundred thirty-seven million, eight hundred nine thousand, four hundred thirty-eight".