518970396816 has 75 divisors (see below), whose sum is σ = 1502125958883. Its totient is φ = 172981487520.

The previous prime is 518970396799. The next prime is 518970396821. The reversal of 518970396816 is 618693079815.

The square root of 518970396816 is 720396.

It is a perfect power (a square), and thus also a powerful number.

518970396816 is a `hidden beast` number, since 518 + 9 + 7 + 0 + 39 + 6 + 81 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 25924251 + ... + 25944261.

Almost surely, 2^518970396816 is an apocalyptic number.

518970396816 is the 720396-th square number.

It is an amenable number.

518970396816 is an abundant number, since it is smaller than the sum of its proper divisors (983155562067).

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

518970396816 is an frugal number, since it uses more digits than its factorization.

518970396816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40042 (or 20016 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

The spelling of 518970396816 in words is "five hundred eighteen billion, nine hundred seventy million, three hundred ninety-six thousand, eight hundred sixteen".