518166582388 has 54 divisors (see below), whose sum is σ = 1142222309046. Its totient is φ = 204988964544.

The previous prime is 518166582379. The next prime is 518166582397. The reversal of 518166582388 is 883285661815.

It is an interprime number because it is at equal distance from previous prime (518166582379) and next prime (518166582397).

It can be written as a sum of positive squares in 3 ways, for example, as 56231585424 + 461934996964 = 237132^2 + 679658^2 .

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 7788495 + ... + 7854742.

Almost surely, 2^518166582388 is an apocalyptic number.

It is an amenable number.

518166582388 is an abundant number, since it is smaller than the sum of its proper divisors (624055726658).

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

518166582388 is a wasteful number, since it uses less digits than its factorization.

518166582388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15643281 (or 15643259 counting only the distinct ones).

The product of its digits is 22118400, while the sum is 61.

The spelling of 518166582388 in words is "five hundred eighteen billion, one hundred sixty-six million, five hundred eighty-two thousand, three hundred eighty-eight".