12637544844 has 12 divisors (see below), whose sum is σ = 29487604664. Its totient is φ = 4212514944.

The previous prime is 12637544839. The next prime is 12637544849. The reversal of 12637544844 is 44844573621.

It is an interprime number because it is at equal distance from previous prime (12637544839) and next prime (12637544849).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12637544844² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12637544793 and 12637544802.

It is not an unprimeable number, because it can be changed into a prime (12637544849) 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, 526564357 + ... + 526564380.

Almost surely, 2^12637544844 is an apocalyptic number.

It is an amenable number.

12637544844 is an abundant number, since it is smaller than the sum of its proper divisors (16850059820).

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

12637544844 is a wasteful number, since it uses less digits than its factorization.

12637544844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053128744 (or 1053128742 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 48.

The spelling of 12637544844 in words is "twelve billion, six hundred thirty-seven million, five hundred forty-four thousand, eight hundred forty-four".