256159318656532 has 24 divisors (see below), whose sum is σ = 450622839038400. Its totient is φ = 127410197143680.

The previous prime is 256159318656529. The next prime is 256159318656611. The reversal of 256159318656532 is 235656813951652.

It is a super-2 number, since 2×256159318656532² (a number of 30 digits) contains 22 as substring.

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, 28706053 + ... + 36556204.

It is an arithmetic number, because the mean of its divisors is an integer number (18775951626600).

Almost surely, 2^{256159318656532} is an apocalyptic number.

It is an amenable number.

256159318656532 is a deficient number, since it is larger than the sum of its proper divisors (194463520381868).

256159318656532 is a wasteful number, since it uses less digits than its factorization.

256159318656532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65267391 (or 65267389 counting only the distinct ones).

The product of its digits is 349920000, while the sum is 67.

The spelling of 256159318656532 in words is "two hundred fifty-six trillion, one hundred fifty-nine billion, three hundred eighteen million, six hundred fifty-six thousand, five hundred thirty-two".