256622340400064 has 56 divisors (see below), whose sum is σ = 512248954974768. Its totient is φ = 127552829573120.

The previous prime is 256622340400051. The next prime is 256622340400091. The reversal of 256622340400064 is 460004043226652.

It is a junction number, because it is equal to n+sod(n) for n = 256622340399988 and 256622340400024.

It is a congruent number.

It is an unprimeable number.

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, 6510779 + ... + 23571909.

Almost surely, 2^{256622340400064} is an apocalyptic number.

It is an amenable number.

256622340400064 is a deficient number, since it is larger than the sum of its proper divisors (255626614574704).

256622340400064 is a wasteful number, since it uses less digits than its factorization.

256622340400064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17062533 (or 17062523 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 44.

The spelling of 256622340400064 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, three hundred forty million, four hundred thousand, sixty-four".