518020204258 has 12 divisors (see below), whose sum is σ = 790423542630. Its totient is φ = 254620096976.

The previous prime is 518020204217. The next prime is 518020204309. The reversal of 518020204258 is 852402020815.

It can be written as a sum of positive squares in only one way, i.e., 516669127209 + 1351077049 = 718797^2 + 36757^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37196443 + ... + 37210366.

Almost surely, 2^518020204258 is an apocalyptic number.

518020204258 is a deficient number, since it is larger than the sum of its proper divisors (272403338372).

518020204258 is an equidigital number, since it uses as much as digits as its factorization.

518020204258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74406929 (or 74406870 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 37.

The spelling of 518020204258 in words is "five hundred eighteen billion, twenty million, two hundred four thousand, two hundred fifty-eight".