518535368836 has 45 divisors (see below), whose sum is σ = 936203118851. Its totient is φ = 251301284496.

The previous prime is 518535368809. The next prime is 518535368843. The reversal of 518535368836 is 638863535815.

It is a happy number.

The square root of 518535368836 is 720094.

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

It can be written as a sum of positive squares in 2 ways, for example, as 323312783236 + 195222585600 = 568606^2 + 441840^2 .

It is a Duffinian 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 14 ways as a sum of consecutive naturals, for example, 1971617241 + ... + 1971617503.

Almost surely, 2^518535368836 is an apocalyptic number.

518535368836 is the 720094-th square number.

It is an amenable number.

518535368836 is a deficient number, since it is larger than the sum of its proper divisors (417667750015).

518535368836 is an frugal number, since it uses more digits than its factorization.

518535368836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 302 counting only the distinct ones).

The product of its digits is 62208000, while the sum is 61.

The spelling of 518535368836 in words is "five hundred eighteen billion, five hundred thirty-five million, three hundred sixty-eight thousand, eight hundred thirty-six".