2156432325636 has 48 divisors (see below), whose sum is σ = 5079270553280. Its totient is φ = 712015194240.

The previous prime is 2156432325601. The next prime is 2156432325637. The reversal of 2156432325636 is 6365232346512.

It is not an unprimeable number, because it can be changed into a prime (2156432325637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4440030 + ... + 4901706.

Almost surely, 2^{2156432325636} is an apocalyptic number.

It is an amenable number.

2156432325636 is an abundant number, since it is smaller than the sum of its proper divisors (2922838227644).

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

2156432325636 is a wasteful number, since it uses less digits than its factorization.

2156432325636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465364 (or 465362 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 48.

The spelling of 2156432325636 in words is "two trillion, one hundred fifty-six billion, four hundred thirty-two million, three hundred twenty-five thousand, six hundred thirty-six".