255513420708 has 72 divisors (see below), whose sum is σ = 737813942208. Its totient is φ = 67388151168.

The previous prime is 255513420671. The next prime is 255513420727. The reversal of 255513420708 is 807024315552.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 255513420708.

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, 8985291 + ... + 9013682.

It is an arithmetic number, because the mean of its divisors is an integer number (10247415864).

Almost surely, 2^255513420708 is an apocalyptic number.

255513420708 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

255513420708 is an abundant number, since it is smaller than the sum of its proper divisors (482300521500).

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

255513420708 is a wasteful number, since it uses less digits than its factorization.

255513420708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17999013 (or 17998998 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 42.

The spelling of 255513420708 in words is "two hundred fifty-five billion, five hundred thirteen million, four hundred twenty thousand, seven hundred eight".