255999646602 has 48 divisors (see below), whose sum is σ = 642587524800. Its totient is φ = 72140798016.

The previous prime is 255999646561. The next prime is 255999646613. The reversal of 255999646602 is 206646999552.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 255999646602.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13906852 + ... + 13925247.

It is an arithmetic number, because the mean of its divisors is an integer number (13387240100).

Almost surely, 2^255999646602 is an apocalyptic number.

255999646602 is an abundant number, since it is smaller than the sum of its proper divisors (386587878198).

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

255999646602 is a wasteful number, since it uses less digits than its factorization.

255999646602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27832187 (or 27832184 counting only the distinct ones).

The product of its (nonzero) digits is 62985600, while the sum is 63.

The spelling of 255999646602 in words is "two hundred fifty-five billion, nine hundred ninety-nine million, six hundred forty-six thousand, six hundred two".