12631213639 has 24 divisors (see below), whose sum is σ = 15110707248. Its totient is φ = 10434654720.

The previous prime is 12631213633. The next prime is 12631213643. The reversal of 12631213639 is 93631213621.

It is not a de Polignac number, because 12631213639 - 2³ = 12631213631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12631213598 and 12631213607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631213631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117109 + ... + 197425.

It is an arithmetic number, because the mean of its divisors is an integer number (629612802).

Almost surely, 2^12631213639 is an apocalyptic number.

12631213639 is a deficient number, since it is larger than the sum of its proper divisors (2479493609).

12631213639 is a wasteful number, since it uses less digits than its factorization.

12631213639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80403 (or 80374 counting only the distinct ones).

The product of its digits is 34992, while the sum is 37.

The spelling of 12631213639 in words is "twelve billion, six hundred thirty-one million, two hundred thirteen thousand, six hundred thirty-nine".