15864655264 has 48 divisors (see below), whose sum is σ = 33179176800. Its totient is φ = 7445862144.

The previous prime is 15864655231. The next prime is 15864655267. The reversal of 15864655264 is 46255646851.

It is not an unprimeable number, because it can be changed into a prime (15864655267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53422 + ... + 185965.

It is an arithmetic number, because the mean of its divisors is an integer number (691232850).

Almost surely, 2^15864655264 is an apocalyptic number.

It is an amenable number.

15864655264 is an abundant number, since it is smaller than the sum of its proper divisors (17314521536).

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

15864655264 is a wasteful number, since it uses less digits than its factorization.

15864655264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239525 (or 239517 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 52.

The spelling of 15864655264 in words is "fifteen billion, eight hundred sixty-four million, six hundred fifty-five thousand, two hundred sixty-four".