12631398269 has 16 divisors (see below), whose sum is σ = 14639781120. Its totient is φ = 10674115200.

The previous prime is 12631398211. The next prime is 12631398277. The reversal of 12631398269 is 96289313621.

It is a happy number.

It is not a de Polignac number, because 12631398269 - 2²⁴ = 12614621053 is a prime.

It is a super-2 number, since 2×12631398269² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631398209) 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, 1887872 + ... + 1894550.

It is an arithmetic number, because the mean of its divisors is an integer number (914986320).

Almost surely, 2^12631398269 is an apocalyptic number.

It is an amenable number.

12631398269 is a deficient number, since it is larger than the sum of its proper divisors (2008382851).

12631398269 is an equidigital number, since it uses as much as digits as its factorization.

12631398269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10460.

The product of its digits is 839808, while the sum is 50.

The spelling of 12631398269 in words is "twelve billion, six hundred thirty-one million, three hundred ninety-eight thousand, two hundred sixty-nine".