15564465156 has 12 divisors (see below), whose sum is σ = 36317085392. Its totient is φ = 5188155048.

The previous prime is 15564465113. The next prime is 15564465157. The reversal of 15564465156 is 65156446551.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (15564465157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648519370 + ... + 648519393.

Almost surely, 2^15564465156 is an apocalyptic number.

It is an amenable number.

15564465156 is an abundant number, since it is smaller than the sum of its proper divisors (20752620236).

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

15564465156 is a wasteful number, since it uses less digits than its factorization.

15564465156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297038770 (or 1297038768 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 48.

The spelling of 15564465156 in words is "fifteen billion, five hundred sixty-four million, four hundred sixty-five thousand, one hundred fifty-six".