522813393978 has 16 divisors (see below), whose sum is σ = 1045904408640. Its totient is φ = 174224861216.

The previous prime is 522813393941. The next prime is 522813394031. The reversal of 522813393978 is 879393318225.

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, 11543043 + ... + 11588246.

It is an arithmetic number, because the mean of its divisors is an integer number (65369025540).

Almost surely, 2^522813393978 is an apocalyptic number.

522813393978 is an abundant number, since it is smaller than the sum of its proper divisors (523091014662).

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

522813393978 is a wasteful number, since it uses less digits than its factorization.

522813393978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23135061.

The product of its digits is 19595520, while the sum is 60.

The spelling of 522813393978 in words is "five hundred twenty-two billion, eight hundred thirteen million, three hundred ninety-three thousand, nine hundred seventy-eight".