256768654538622 has 32 divisors (see below), whose sum is σ = 518843978118144. Its totient is φ = 84705149088000.

The previous prime is 256768654538533. The next prime is 256768654538639. The reversal of 256768654538622 is 226835456867652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19029747 + ... + 29591697.

It is an arithmetic number, because the mean of its divisors is an integer number (16213874316192).

Almost surely, 2^{256768654538622} is an apocalyptic number.

256768654538622 is an abundant number, since it is smaller than the sum of its proper divisors (262075323579522).

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

256768654538622 is a wasteful number, since it uses less digits than its factorization.

256768654538622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10603824.

The product of its digits is 6967296000, while the sum is 75.

The spelling of 256768654538622 in words is "two hundred fifty-six trillion, seven hundred sixty-eight billion, six hundred fifty-four million, five hundred thirty-eight thousand, six hundred twenty-two".