156243405256 has 16 divisors (see below), whose sum is σ = 293012919900. Its totient is φ = 78106626624.

The previous prime is 156243405233. The next prime is 156243405289. The reversal of 156243405256 is 652504342651.

It can be written as a sum of positive squares in 2 ways, for example, as 153170476900 + 3072928356 = 391370^2 + 55434^2 .

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, 1840395 + ... + 1923418.

Almost surely, 2^156243405256 is an apocalyptic number.

It is an amenable number.

156243405256 is a deficient number, since it is larger than the sum of its proper divisors (136769514644).

156243405256 is a wasteful number, since it uses less digits than its factorization.

156243405256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3769008 (or 3769004 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 156243405256 in words is "one hundred fifty-six billion, two hundred forty-three million, four hundred five thousand, two hundred fifty-six".