12638496369 has 16 divisors (see below), whose sum is σ = 17440315200. Its totient is φ = 8135408640.

The previous prime is 12638496359. The next prime is 12638496383. The reversal of 12638496369 is 96369483621.

It is not a de Polignac number, because 12638496369 - 2²⁴ = 12621719153 is a prime.

It is a super-2 number, since 2×12638496369² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12638496359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517719 + ... + 541580.

It is an arithmetic number, because the mean of its divisors is an integer number (1090019700).

Almost surely, 2^12638496369 is an apocalyptic number.

It is an amenable number.

12638496369 is a deficient number, since it is larger than the sum of its proper divisors (4801818831).

12638496369 is a wasteful number, since it uses less digits than its factorization.

12638496369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059440.

The product of its digits is 10077696, while the sum is 57.

The spelling of 12638496369 in words is "twelve billion, six hundred thirty-eight million, four hundred ninety-six thousand, three hundred sixty-nine".