13642624631 has 4 divisors (see below), whose sum is σ = 13648454664. Its totient is φ = 13636794600.

The previous prime is 13642624601. The next prime is 13642624649.

13642624631 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13642624631 is a prime.

It is a super-2 number, since 2×13642624631² (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 (13642624601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2911505 + ... + 2916186.

It is an arithmetic number, because the mean of its divisors is an integer number (3412113666).

Almost surely, 2^13642624631 is an apocalyptic number.

13642624631 is a deficient number, since it is larger than the sum of its proper divisors (5830033).

13642624631 is an equidigital number, since it uses as much as digits as its factorization.

13642624631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5830032.

The product of its digits is 124416, while the sum is 38.

The spelling of 13642624631 in words is "thirteen billion, six hundred forty-two million, six hundred twenty-four thousand, six hundred thirty-one".