520573505388 has 12 divisors (see below), whose sum is σ = 1214671512600. Its totient is φ = 173524501792.

The previous prime is 520573505369. The next prime is 520573505401. The reversal of 520573505388 is 883505375025.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 520573505388.

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, 21690562713 + ... + 21690562736.

It is an arithmetic number, because the mean of its divisors is an integer number (101222626050).

Almost surely, 2^520573505388 is an apocalyptic number.

It is an amenable number.

520573505388 is an abundant number, since it is smaller than the sum of its proper divisors (694098007212).

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

520573505388 is a wasteful number, since it uses less digits than its factorization.

520573505388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43381125456 (or 43381125454 counting only the distinct ones).

The product of its (nonzero) digits is 5040000, while the sum is 51.

The spelling of 520573505388 in words is "five hundred twenty billion, five hundred seventy-three million, five hundred five thousand, three hundred eighty-eight".