256553585948 has 24 divisors (see below), whose sum is σ = 496682492544. Its totient is φ = 114972796400.

The previous prime is 256553585927. The next prime is 256553585983. The reversal of 256553585948 is 849585355652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41058590 + ... + 41064837.

It is an arithmetic number, because the mean of its divisors is an integer number (20695103856).

Almost surely, 2^256553585948 is an apocalyptic number.

It is an amenable number.

256553585948 is a deficient number, since it is larger than the sum of its proper divisors (240128906596).

256553585948 is a wasteful number, since it uses less digits than its factorization.

256553585948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82123513 (or 82123511 counting only the distinct ones).

The product of its digits is 259200000, while the sum is 65.

The spelling of 256553585948 in words is "two hundred fifty-six billion, five hundred fifty-three million, five hundred eighty-five thousand, nine hundred forty-eight".