155003632505256 has 32 divisors (see below), whose sum is σ = 387509420633760. Its totient is φ = 51667832252352.

The previous prime is 155003632505221. The next prime is 155003632505263. The reversal of 155003632505256 is 652505236300551.

It is a super-2 number, since 2×155003632505256² (a number of 29 digits) contains 22 as substring.

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, 36060346 + ... + 40129238.

It is an arithmetic number, because the mean of its divisors is an integer number (12109669394805).

Almost surely, 2^{155003632505256} is an apocalyptic number.

It is an amenable number.

155003632505256 is an abundant number, since it is smaller than the sum of its proper divisors (232505788128504).

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

155003632505256 is a wasteful number, since it uses less digits than its factorization.

155003632505256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5656185 (or 5656181 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 48.

The spelling of 155003632505256 in words is "one hundred fifty-five trillion, three billion, six hundred thirty-two million, five hundred five thousand, two hundred fifty-six".