15000551555556 has 24 divisors (see below), whose sum is σ = 40001470815040. Its totient is φ = 4285871872992.

The previous prime is 15000551555501. The next prime is 15000551555573. The reversal of 15000551555556 is 65555515500051.

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, 89288997271 + ... + 89288997438.

Almost surely, 2^{15000551555556} is an apocalyptic number.

It is an amenable number.

15000551555556 is an abundant number, since it is smaller than the sum of its proper divisors (25000919259484).

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

15000551555556 is a wasteful number, since it uses less digits than its factorization.

15000551555556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178577994723 (or 178577994721 counting only the distinct ones).

The product of its (nonzero) digits is 2343750, while the sum is 48.

The spelling of 15000551555556 in words is "fifteen trillion, five hundred fifty-one million, five hundred fifty-five thousand, five hundred fifty-six".