13236720507 has 12 divisors (see below), whose sum is σ = 19125295800. Its totient is φ = 8821901088.

The previous prime is 13236720457. The next prime is 13236720521. The reversal of 13236720507 is 70502763231.

It is not a de Polignac number, because 13236720507 - 2⁷ = 13236720379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13236725507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182173 + ... + 244254.

It is an arithmetic number, because the mean of its divisors is an integer number (1593774650).

Almost surely, 2^13236720507 is an apocalyptic number.

13236720507 is a deficient number, since it is larger than the sum of its proper divisors (5888575293).

13236720507 is a wasteful number, since it uses less digits than its factorization.

13236720507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429882 (or 429879 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The spelling of 13236720507 in words is "thirteen billion, two hundred thirty-six million, seven hundred twenty thousand, five hundred seven".