255963430518 has 32 divisors (see below), whose sum is σ = 514289260800. Its totient is φ = 84928108896.

The previous prime is 255963430441. The next prime is 255963430549. The reversal of 255963430518 is 815034369552.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1388193 + ... + 1561731.

It is an arithmetic number, because the mean of its divisors is an integer number (16071539400).

Almost surely, 2^255963430518 is an apocalyptic number.

255963430518 is an abundant number, since it is smaller than the sum of its proper divisors (258325830282).

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

255963430518 is a wasteful number, since it uses less digits than its factorization.

255963430518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174676.

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 255963430518 in words is "two hundred fifty-five billion, nine hundred sixty-three million, four hundred thirty thousand, five hundred eighteen".