13915443264 has 28 divisors (see below), whose sum is σ = 36817944144. Its totient is φ = 4638481024.

The previous prime is 13915443251. The next prime is 13915443271. The reversal of 13915443264 is 46234451931.

It is a super-2 number, since 2×13915443264² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36237942 + ... + 36238325.

Almost surely, 2^13915443264 is an apocalyptic number.

It is an amenable number.

13915443264 is an abundant number, since it is smaller than the sum of its proper divisors (22902500880).

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

13915443264 is an equidigital number, since it uses as much as digits as its factorization.

13915443264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72476282 (or 72476272 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The spelling of 13915443264 in words is "thirteen billion, nine hundred fifteen million, four hundred forty-three thousand, two hundred sixty-four".