13639604631 has 8 divisors (see below), whose sum is σ = 18677656944. Its totient is φ = 8847311040.

The previous prime is 13639604621. The next prime is 13639604633. The reversal of 13639604631 is 13640693631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13639604631 - 2¹⁴ = 13639588247 is a prime.

It is a super-2 number, since 2×13639604631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13639604633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61439550 + ... + 61439771.

It is an arithmetic number, because the mean of its divisors is an integer number (2334707118).

Almost surely, 2^13639604631 is an apocalyptic number.

13639604631 is a deficient number, since it is larger than the sum of its proper divisors (5038052313).

13639604631 is a wasteful number, since it uses less digits than its factorization.

13639604631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122879361.

The product of its (nonzero) digits is 209952, while the sum is 42.

The spelling of 13639604631 in words is "thirteen billion, six hundred thirty-nine million, six hundred four thousand, six hundred thirty-one".