255656644620 has 96 divisors (see below), whose sum is σ = 771120331968. Its totient is φ = 62913134592.

The previous prime is 255656644589. The next prime is 255656644627. The reversal of 255656644620 is 26446656552.

It is not an unprimeable number, because it can be changed into a prime (255656644627) 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, 2839332 + ... + 2927988.

It is an arithmetic number, because the mean of its divisors is an integer number (8032503458).

Almost surely, 2^255656644620 is an apocalyptic number.

255656644620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255656644620 is an abundant number, since it is smaller than the sum of its proper divisors (515463687348).

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

255656644620 is a wasteful number, since it uses less digits than its factorization.

255656644620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92379 (or 92377 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 51.

The spelling of 255656644620 in words is "two hundred fifty-five billion, six hundred fifty-six million, six hundred forty-four thousand, six hundred twenty".