12637998972 has 48 divisors (see below), whose sum is σ = 33895024800. Its totient is φ = 4067400960.

The previous prime is 12637998949. The next prime is 12637999027. The reversal of 12637998972 is 27989973621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2014429 + ... + 2020692.

It is an arithmetic number, because the mean of its divisors is an integer number (706146350).

Almost surely, 2^12637998972 is an apocalyptic number.

12637998972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12637998972 is an abundant number, since it is smaller than the sum of its proper divisors (21257025828).

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

12637998972 is a wasteful number, since it uses less digits than its factorization.

12637998972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035163 (or 4035155 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The spelling of 12637998972 in words is "twelve billion, six hundred thirty-seven million, nine hundred ninety-eight thousand, nine hundred seventy-two".