256324504164 has 48 divisors (see below), whose sum is σ = 608931219456. Its totient is φ = 83902420000.

The previous prime is 256324504151. The next prime is 256324504169. The reversal of 256324504164 is 461405423652.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (256324504169) 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, 385452 + ... + 813155.

It is an arithmetic number, because the mean of its divisors is an integer number (12686067072).

Almost surely, 2^256324504164 is an apocalyptic number.

It is an amenable number.

256324504164 is an abundant number, since it is smaller than the sum of its proper divisors (352606715292).

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

256324504164 is a wasteful number, since it uses less digits than its factorization.

256324504164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198936 (or 1198934 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 256324504164 in words is "two hundred fifty-six billion, three hundred twenty-four million, five hundred four thousand, one hundred sixty-four".