512020308818 has 8 divisors (see below), whose sum is σ = 768068588412. Its totient is φ = 255997446016.

The previous prime is 512020308773. The next prime is 512020308841. The reversal of 512020308818 is 818803020215.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 498567324649 + 13452984169 = 706093^2 + 115987^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6303755 + ... + 6384462.

Almost surely, 2^512020308818 is an apocalyptic number.

512020308818 is a deficient number, since it is larger than the sum of its proper divisors (256048279594).

512020308818 is a wasteful number, since it uses less digits than its factorization.

512020308818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12708396.

The product of its (nonzero) digits is 30720, while the sum is 38.

The spelling of 512020308818 in words is "five hundred twelve billion, twenty million, three hundred eight thousand, eight hundred eighteen".