805473705220 has 24 divisors (see below), whose sum is σ = 1691730765144. Its totient is φ = 322144532736.

The previous prime is 805473705203. The next prime is 805473705269. The reversal of 805473705220 is 22507374508.

It can be written as a sum of positive squares in 4 ways, for example, as 221358958144 + 584114747076 = 470488^2 + 764274^2 .

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, 2662207 + ... + 2949286.

It is an arithmetic number, because the mean of its divisors is an integer number (70488781881).

Almost surely, 2^805473705220 is an apocalyptic number.

It is an amenable number.

805473705220 is an abundant number, since it is smaller than the sum of its proper divisors (886257059924).

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

805473705220 is a wasteful number, since it uses less digits than its factorization.

805473705220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5618679 (or 5618677 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 805473705220 in words is "eight hundred five billion, four hundred seventy-three million, seven hundred five thousand, two hundred twenty".