256622444552144 has 40 divisors (see below), whose sum is σ = 574312797039168. Its totient is φ = 109785003015680.

The previous prime is 256622444552063. The next prime is 256622444552167. The reversal of 256622444552144 is 441255444226652.

256622444552144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 256622444552144.

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, 42884763812 + ... + 42884769795.

Almost surely, 2^{256622444552144} is an apocalyptic number.

It is an amenable number.

256622444552144 is an abundant number, since it is smaller than the sum of its proper divisors (317690352487024).

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

256622444552144 is a wasteful number, since it uses less digits than its factorization.

256622444552144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85769533643 (or 85769533637 counting only the distinct ones).

The product of its digits is 73728000, while the sum is 56.

Adding to 256622444552144 its reverse (441255444226652), we get a palindrome (697877888778796).

The spelling of 256622444552144 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, four hundred forty-four million, five hundred fifty-two thousand, one hundred forty-four".