256894560368 has 20 divisors (see below), whose sum is σ = 498312670680. Its totient is φ = 128297742144.

The previous prime is 256894560367. The next prime is 256894560371. The reversal of 256894560368 is 863065498652.

256894560368 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 256894560368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256894560367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9331955 + ... + 9359442.

It is an arithmetic number, because the mean of its divisors is an integer number (24915633534).

Almost surely, 2^256894560368 is an apocalyptic number.

It is an amenable number.

256894560368 is a deficient number, since it is larger than the sum of its proper divisors (241418110312).

256894560368 is a wasteful number, since it uses less digits than its factorization.

256894560368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18692264 (or 18692258 counting only the distinct ones).

The product of its (nonzero) digits is 74649600, while the sum is 62.

The spelling of 256894560368 in words is "two hundred fifty-six billion, eight hundred ninety-four million, five hundred sixty thousand, three hundred sixty-eight".