256022655144466 has 16 divisors (see below), whose sum is σ = 438919462370880. Its totient is φ = 109718124531120.

The previous prime is 256022655144461. The next prime is 256022655144467. The reversal of 256022655144466 is 664441556220652.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 256022655144466.

It is not an unprimeable number, because it can be changed into a prime (256022655144461) 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 7 ways as a sum of consecutive naturals, for example, 488939881 + ... + 489463228.

It is an arithmetic number, because the mean of its divisors is an integer number (27432466398180).

Almost surely, 2^{256022655144466} is an apocalyptic number.

256022655144466 is a deficient number, since it is larger than the sum of its proper divisors (182896807226414).

256022655144466 is a wasteful number, since it uses less digits than its factorization.

256022655144466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978421809.

The product of its (nonzero) digits is 82944000, while the sum is 58.

The spelling of 256022655144466 in words is "two hundred fifty-six trillion, twenty-two billion, six hundred fifty-five million, one hundred forty-four thousand, four hundred sixty-six".