256065731633232 has 160 divisors (see below), whose sum is σ = 735664499458560. Its totient is φ = 85278508024320.

The previous prime is 256065731633221. The next prime is 256065731633233. The reversal of 256065731633232 is 232336137560652.

256065731633232 is a `hidden beast` number, since 2 + 5 + 6 + 0 + 6 + 573 + 1 + 6 + 3 + 32 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256065731633233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2961041578 + ... + 2961128054.

It is an arithmetic number, because the mean of its divisors is an integer number (4597903121616).

Almost surely, 2^{256065731633232} is an apocalyptic number.

It is an amenable number.

256065731633232 is an abundant number, since it is smaller than the sum of its proper divisors (479598767825328).

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

256065731633232 is a wasteful number, since it uses less digits than its factorization.

256065731633232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92578 (or 92566 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 54.

The spelling of 256065731633232 in words is "two hundred fifty-six trillion, sixty-five billion, seven hundred thirty-one million, six hundred thirty-three thousand, two hundred thirty-two".