512556226818 has 16 divisors (see below), whose sum is σ = 1026334290240. Its totient is φ = 170648436176.

The previous prime is 512556226801. The next prime is 512556226901. The reversal of 512556226818 is 818622655215.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50904405 + ... + 50914472.

It is an arithmetic number, because the mean of its divisors is an integer number (64145893140).

Almost surely, 2^512556226818 is an apocalyptic number.

512556226818 is an abundant number, since it is smaller than the sum of its proper divisors (513778063422).

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

512556226818 is a wasteful number, since it uses less digits than its factorization.

512556226818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101819721.

The product of its digits is 2304000, while the sum is 51.

The spelling of 512556226818 in words is "five hundred twelve billion, five hundred fifty-six million, two hundred twenty-six thousand, eight hundred eighteen".