256326862737630 has 64 divisors (see below), whose sum is σ = 626921972354880. Its totient is φ = 67050199197696.

The previous prime is 256326862737587. The next prime is 256326862737817. The reversal of 256326862737630 is 36737268623652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9094875 + ... + 24400214.

It is an arithmetic number, because the mean of its divisors is an integer number (9795655818045).

Almost surely, 2^{256326862737630} is an apocalyptic number.

256326862737630 is an abundant number, since it is smaller than the sum of its proper divisors (370595109617250).

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

256326862737630 is a wasteful number, since it uses less digits than its factorization.

256326862737630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33499965.

The product of its (nonzero) digits is 548674560, while the sum is 66.

The spelling of 256326862737630 in words is "two hundred fifty-six trillion, three hundred twenty-six billion, eight hundred sixty-two million, seven hundred thirty-seven thousand, six hundred thirty".