518368668500 has 48 divisors (see below), whose sum is σ = 1191702308160. Its totient is φ = 196434439200.

The previous prime is 518368668497. The next prime is 518368668511. The reversal of 518368668500 is 5866863815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27273062 + ... + 27292061.

It is an arithmetic number, because the mean of its divisors is an integer number (24827131420).

Almost surely, 2^518368668500 is an apocalyptic number.

518368668500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

518368668500 is an abundant number, since it is smaller than the sum of its proper divisors (673333639660).

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

518368668500 is a wasteful number, since it uses less digits than its factorization.

518368668500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54565161 (or 54565149 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 518368668500 in words is "five hundred eighteen billion, three hundred sixty-eight million, six hundred sixty-eight thousand, five hundred".