518455225472 has 72 divisors (see below), whose sum is σ = 1067772964545. Its totient is φ = 250743237120.

The previous prime is 518455225469. The next prime is 518455225493. The reversal of 518455225472 is 274522554815.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 518319363136 + 135862336 = 719944^2 + 11656^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=509144.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 518455225472.

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 8 ways as a sum of consecutive naturals, for example, 252534398 + ... + 252536450.

Almost surely, 2^518455225472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518455225472

518455225472 is an abundant number, since it is smaller than the sum of its proper divisors (549317739073).

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

518455225472 is an frugal number, since it uses more digits than its factorization.

518455225472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4182 (or 2086 counting only the distinct ones).

The product of its digits is 4480000, while the sum is 50.

Multiplying 518455225472 by its sum of digits (50), we get a square (25922761273600 = 5091440²).

The spelling of 518455225472 in words is "five hundred eighteen billion, four hundred fifty-five million, two hundred twenty-five thousand, four hundred seventy-two".