13213918518 has 32 divisors (see below), whose sum is σ = 26729740800. Its totient is φ = 4354588896.

The previous prime is 13213918499. The next prime is 13213918519. The reversal of 13213918518 is 81581931231.

13213918518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13213918518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213918519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166180 + ... + 232472.

It is an arithmetic number, because the mean of its divisors is an integer number (835304400).

Almost surely, 2^13213918518 is an apocalyptic number.

13213918518 is an abundant number, since it is smaller than the sum of its proper divisors (13515822282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13213918518 is a wasteful number, since it uses less digits than its factorization.

13213918518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66676.

The product of its digits is 51840, while the sum is 42.

The spelling of 13213918518 in words is "thirteen billion, two hundred thirteen million, nine hundred eighteen thousand, five hundred eighteen".