256622372623220 has 96 divisors (see below), whose sum is σ = 567467208000000. Its totient is φ = 97212660461568.

The previous prime is 256622372623187. The next prime is 256622372623229. The reversal of 256622372623220 is 22326273226652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256622372623229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23017518206 + ... + 23017529354.

It is an arithmetic number, because the mean of its divisors is an integer number (5911116750000).

Almost surely, 2^{256622372623220} is an apocalyptic number.

256622372623220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256622372623220 is an abundant number, since it is smaller than the sum of its proper divisors (310844835376780).

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

256622372623220 is a wasteful number, since it uses less digits than its factorization.

256622372623220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26745 (or 26743 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 50.

The spelling of 256622372623220 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, three hundred seventy-two million, six hundred twenty-three thousand, two hundred twenty".