256477521750620 has 12 divisors (see below), whose sum is σ = 538602795676344. Its totient is φ = 102591008700240.

The previous prime is 256477521750589. The next prime is 256477521750817. The reversal of 256477521750620 is 26057125774652.

It is a self number, because there is not a number n which added to its sum of digits gives 256477521750620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6411938043746 + ... + 6411938043785.

It is an arithmetic number, because the mean of its divisors is an integer number (44883566306362).

Almost surely, 2^{256477521750620} is an apocalyptic number.

256477521750620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256477521750620 is an abundant number, since it is smaller than the sum of its proper divisors (282125273925724).

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

256477521750620 is a wasteful number, since it uses less digits than its factorization.

256477521750620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12823876087540 (or 12823876087538 counting only the distinct ones).

The product of its (nonzero) digits is 49392000, while the sum is 59.

The spelling of 256477521750620 in words is "two hundred fifty-six trillion, four hundred seventy-seven billion, five hundred twenty-one million, seven hundred fifty thousand, six hundred twenty".