15321135246664 has 32 divisors (see below), whose sum is σ = 31026063136320. Its totient is φ = 7050914807616.

The previous prime is 15321135246653. The next prime is 15321135246701. The reversal of 15321135246664 is 46664253112351.

It is a happy number.

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, 212238564 + ... + 212310739.

It is an arithmetic number, because the mean of its divisors is an integer number (969564473010).

Almost surely, 2^{15321135246664} is an apocalyptic number.

It is an amenable number.

15321135246664 is an abundant number, since it is smaller than the sum of its proper divisors (15704927889656).

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

15321135246664 is a wasteful number, since it uses less digits than its factorization.

15321135246664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424549669 (or 424549665 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 49.

The spelling of 15321135246664 in words is "fifteen trillion, three hundred twenty-one billion, one hundred thirty-five million, two hundred forty-six thousand, six hundred sixty-four".