505393770020 has 24 divisors (see below), whose sum is σ = 1097924398200. Its totient is φ = 195186559232.

The previous prime is 505393769963. The next prime is 505393770041. The reversal of 505393770020 is 20077393505.

It can be written as a sum of positive squares in 4 ways, for example, as 51268733476 + 454125036544 = 226426^2 + 673888^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 505393770020.

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, 435683705 + ... + 435684864.

It is an arithmetic number, because the mean of its divisors is an integer number (45746849925).

Almost surely, 2^505393770020 is an apocalyptic number.

It is an amenable number.

505393770020 is an abundant number, since it is smaller than the sum of its proper divisors (592530628180).

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

505393770020 is a wasteful number, since it uses less digits than its factorization.

505393770020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871368607 (or 871368605 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 41.

The spelling of 505393770020 in words is "five hundred five billion, three hundred ninety-three million, seven hundred seventy thousand, twenty".