13515831216388 has 12 divisors (see below), whose sum is σ = 23652971768272. Its totient is φ = 6757839282600.

The previous prime is 13515831216373. The next prime is 13515831216427. The reversal of 13515831216388 is 88361213851531.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 18682038 + ... + 19392013.

Almost surely, 2^{13515831216388} is an apocalyptic number.

It is an amenable number.

13515831216388 is a deficient number, since it is larger than the sum of its proper divisors (10137140551884).

13515831216388 is a wasteful number, since it uses less digits than its factorization.

13515831216388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38162802 (or 38162800 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 55.

The spelling of 13515831216388 in words is "thirteen trillion, five hundred fifteen billion, eight hundred thirty-one million, two hundred sixteen thousand, three hundred eighty-eight".