518866979904 has 1680 divisors, whose sum is σ = 2064351146880. Its totient is φ = 125769646080.

The previous prime is 518866979879. The next prime is 518866979909. The reversal of 518866979904 is 409979668815.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (518866979909) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 7107766812 + ... + 7107766884.

Almost surely, 2^518866979904 is an apocalyptic number.

518866979904 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518866979904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1032175573440).

518866979904 is an abundant number, since it is smaller than the sum of its proper divisors (1545484166976).

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

518866979904 is a wasteful number, since it uses less digits than its factorization.

518866979904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 235146240, while the sum is 72.

The spelling of 518866979904 in words is "five hundred eighteen billion, eight hundred sixty-six million, nine hundred seventy-nine thousand, nine hundred four".