13813332872 has 32 divisors (see below), whose sum is σ = 26227131480. Its totient is φ = 6819801600.

The previous prime is 13813332773. The next prime is 13813332901. The reversal of 13813332872 is 27823331831.

It can be written as a sum of positive squares in 4 ways, for example, as 13812360676 + 972196 = 117526^2 + 986^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 278468 + ... + 324300.

Almost surely, 2^13813332872 is an apocalyptic number.

It is an amenable number.

13813332872 is a deficient number, since it is larger than the sum of its proper divisors (12413798608).

13813332872 is a wasteful number, since it uses less digits than its factorization.

13813332872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46313 (or 46309 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The spelling of 13813332872 in words is "thirteen billion, eight hundred thirteen million, three hundred thirty-two thousand, eight hundred seventy-two".