13318815372 has 24 divisors (see below), whose sum is σ = 31087807296. Its totient is φ = 4438094928.

The previous prime is 13318815343. The next prime is 13318815401. The reversal of 13318815372 is 27351881331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13318815343) and next prime (13318815401).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151738 + ... + 222849.

It is an arithmetic number, because the mean of its divisors is an integer number (1295325304).

Almost surely, 2^13318815372 is an apocalyptic number.

13318815372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13318815372 is an abundant number, since it is smaller than the sum of its proper divisors (17768991924).

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

13318815372 is a wasteful number, since it uses less digits than its factorization.

13318815372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377557 (or 377555 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The spelling of 13318815372 in words is "thirteen billion, three hundred eighteen million, eight hundred fifteen thousand, three hundred seventy-two".