15533113664 has 28 divisors (see below), whose sum is σ = 32163678624. Its totient is φ = 7428879744.

The previous prime is 15533113637. The next prime is 15533113703. The reversal of 15533113664 is 46631133551.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 5274722 + ... + 5277665.

It is an arithmetic number, because the mean of its divisors is an integer number (1148702808).

Almost surely, 2^15533113664 is an apocalyptic number.

It is an amenable number.

15533113664 is an abundant number, since it is smaller than the sum of its proper divisors (16630564960).

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

15533113664 is a wasteful number, since it uses less digits than its factorization.

15533113664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10552422 (or 10552412 counting only the distinct ones).

The product of its digits is 97200, while the sum is 38.

The spelling of 15533113664 in words is "fifteen billion, five hundred thirty-three million, one hundred thirteen thousand, six hundred sixty-four".