15505056156 has 12 divisors (see below), whose sum is σ = 36178464392. Its totient is φ = 5168352048.

The previous prime is 15505056121. The next prime is 15505056167. The reversal of 15505056156 is 65165050551.

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

It is a hoax number, since the sum of its digits (39) 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, 646043995 + ... + 646044018.

Almost surely, 2^15505056156 is an apocalyptic number.

It is an amenable number.

15505056156 is an abundant number, since it is smaller than the sum of its proper divisors (20673408236).

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

15505056156 is a wasteful number, since it uses less digits than its factorization.

15505056156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292088020 (or 1292088018 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 15505056156 in words is "fifteen billion, five hundred five million, fifty-six thousand, one hundred fifty-six".