256159318656530 has 256 divisors, whose sum is σ = 517598806413312. Its totient is φ = 90836619264000.

The previous prime is 256159318656529. The next prime is 256159318656611. The reversal of 256159318656530 is 35656813951652.

It is a super-2 number, since 2×256159318656530² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12209098640 + ... + 12209119620.

It is an arithmetic number, because the mean of its divisors is an integer number (2021870337552).

Almost surely, 2^{256159318656530} is an apocalyptic number.

256159318656530 is an abundant number, since it is smaller than the sum of its proper divisors (261439487756782).

256159318656530 is a wasteful number, since it uses less digits than its factorization.

256159318656530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21493.

The product of its (nonzero) digits is 174960000, while the sum is 65.

The spelling of 256159318656530 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".