256013445560 has 16 divisors (see below), whose sum is σ = 576030252600. Its totient is φ = 102405378208.

The previous prime is 256013445559. The next prime is 256013445593. The reversal of 256013445560 is 65544310652.

It is a happy number.

It is a congruent number.

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, 3200168030 + ... + 3200168109.

Almost surely, 2^256013445560 is an apocalyptic number.

256013445560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256013445560 is an abundant number, since it is smaller than the sum of its proper divisors (320016807040).

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

256013445560 is a wasteful number, since it uses less digits than its factorization.

256013445560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400336150 (or 6400336146 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 256013445560 in words is "two hundred fifty-six billion, thirteen million, four hundred forty-five thousand, five hundred sixty".