518201299044 has 243 divisors, whose sum is σ = 1560939196089. Its totient is φ = 144778645440.

The previous prime is 518201299037. The next prime is 518201299067. The reversal of 518201299044 is 440992102815.

It is a happy number.

The square root of 518201299044 is 719862.

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

518201299044 is a `hidden beast` number, since 518 + 2 + 0 + 1 + 2 + 9 + 90 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 76656996900 + 441544302144 = 276870^2 + 664488^2 .

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 80 ways as a sum of consecutive naturals, for example, 617641177 + ... + 617642015.

Almost surely, 2^518201299044 is an apocalyptic number.

518201299044 is the 719862-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518201299044

518201299044 is an abundant number, since it is smaller than the sum of its proper divisors (1042737897045).

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

518201299044 is a wasteful number, since it uses less digits than its factorization.

518201299044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 518201299044 in words is "five hundred eighteen billion, two hundred one million, two hundred ninety-nine thousand, forty-four".