256087408736080 has 80 divisors (see below), whose sum is σ = 627225710788800. Its totient is φ = 96968479518720.

The previous prime is 256087408736057. The next prime is 256087408736111. The reversal of 256087408736080 is 80637804780652.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63288865 + ... + 67213504.

It is an arithmetic number, because the mean of its divisors is an integer number (7840321384860).

Almost surely, 2^{256087408736080} is an apocalyptic number.

256087408736080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256087408736080 is an abundant number, since it is smaller than the sum of its proper divisors (371138302052720).

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

256087408736080 is a wasteful number, since it uses less digits than its factorization.

256087408736080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130503692 (or 130503686 counting only the distinct ones).

The product of its (nonzero) digits is 108380160, while the sum is 64.

The spelling of 256087408736080 in words is "two hundred fifty-six trillion, eighty-seven billion, four hundred eight million, seven hundred thirty-six thousand, eighty".