256545323180 has 24 divisors (see below), whose sum is σ = 541971204768. Its totient is φ = 102003648128.

The previous prime is 256545323159. The next prime is 256545323183. The reversal of 256545323180 is 81323545652.

It is not an unprimeable number, because it can be changed into a prime (256545323183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38401649 + ... + 38408328.

It is an arithmetic number, because the mean of its divisors is an integer number (22582133532).

Almost surely, 2^256545323180 is an apocalyptic number.

256545323180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256545323180 is an abundant number, since it is smaller than the sum of its proper divisors (285425881588).

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

256545323180 is a wasteful number, since it uses less digits than its factorization.

256545323180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76810153 (or 76810151 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 256545323180 in words is "two hundred fifty-six billion, five hundred forty-five million, three hundred twenty-three thousand, one hundred eighty".