256552601604 has 48 divisors (see below), whose sum is σ = 653750536320. Its totient is φ = 77827438080.

The previous prime is 256552601603. The next prime is 256552601651. The reversal of 256552601604 is 406106255652.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (256552601603) 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, 11570389 + ... + 11592540.

It is an arithmetic number, because the mean of its divisors is an integer number (13619802840).

Almost surely, 2^256552601604 is an apocalyptic number.

It is an amenable number.

256552601604 is an abundant number, since it is smaller than the sum of its proper divisors (397197934716).

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

256552601604 is a wasteful number, since it uses less digits than its factorization.

256552601604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23163020 (or 23163018 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 256552601604 in words is "two hundred fifty-six billion, five hundred fifty-two million, six hundred one thousand, six hundred four".