518660919342 has 48 divisors (see below), whose sum is σ = 1191848100768. Its totient is φ = 162659154240.

The previous prime is 518660919313. The next prime is 518660919353. The reversal of 518660919342 is 243919066815.

518660919342 is a `hidden beast` number, since 5 + 18 + 6 + 609 + 19 + 3 + 4 + 2 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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 23 ways as a sum of consecutive naturals, for example, 10243633 + ... + 10294140.

It is an arithmetic number, because the mean of its divisors is an integer number (24830168766).

Almost surely, 2^518660919342 is an apocalyptic number.

518660919342 is an abundant number, since it is smaller than the sum of its proper divisors (673187181426).

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

518660919342 is a wasteful number, since it uses less digits than its factorization.

518660919342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20537865 (or 20537862 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 518660919342 in words is "five hundred eighteen billion, six hundred sixty million, nine hundred nineteen thousand, three hundred forty-two".