518146742824 has 8 divisors (see below), whose sum is σ = 971525142810. Its totient is φ = 259073371408.

The previous prime is 518146742783. The next prime is 518146742831. The reversal of 518146742824 is 428247641815.

It can be written as a sum of positive squares in only one way, i.e., 453130922500 + 65015820324 = 673150^2 + 254982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32384171419 + ... + 32384171434.

Almost surely, 2^518146742824 is an apocalyptic number.

It is an amenable number.

518146742824 is a deficient number, since it is larger than the sum of its proper divisors (453378399986).

518146742824 is a wasteful number, since it uses less digits than its factorization.

518146742824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64768342859 (or 64768342855 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 52.

The spelling of 518146742824 in words is "five hundred eighteen billion, one hundred forty-six million, seven hundred forty-two thousand, eight hundred twenty-four".