12637909009 has 12 divisors (see below), whose sum is σ = 13911864372. Its totient is φ = 11471963360.

The previous prime is 12637909001. The next prime is 12637909019. The reversal of 12637909009 is 90090973621.

It can be written as a sum of positive squares in 2 ways, for example, as 6356553984 + 6281355025 = 79728^2 + 79255^2 .

It is not a de Polignac number, because 12637909009 - 2³ = 12637909001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12637909009.

It is not an unprimeable number, because it can be changed into a prime (12637909001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4779 + ... + 159055.

It is an arithmetic number, because the mean of its divisors is an integer number (1159322031).

Almost surely, 2^12637909009 is an apocalyptic number.

It is an amenable number.

12637909009 is a deficient number, since it is larger than the sum of its proper divisors (1273955363).

12637909009 is a wasteful number, since it uses less digits than its factorization.

12637909009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154976 (or 154965 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 46.

The spelling of 12637909009 in words is "twelve billion, six hundred thirty-seven million, nine hundred nine thousand, nine".