520530166386 has 24 divisors (see below), whose sum is σ = 1127838180924. Its totient is φ = 173506544640.

The previous prime is 520530166379. The next prime is 520530166447. The reversal of 520530166386 is 683661035025.

520530166386 is a `hidden beast` number, since 5 + 2 + 0 + 5 + 3 + 0 + 1 + 6 + 638 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 520228970361 + 301196025 = 721269^2 + 17355^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 715626 + ... + 1246266.

Almost surely, 2^520530166386 is an apocalyptic number.

520530166386 is an abundant number, since it is smaller than the sum of its proper divisors (607308014538).

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

520530166386 is a wasteful number, since it uses less digits than its factorization.

520530166386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585146 (or 585143 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 520530166386 in words is "five hundred twenty billion, five hundred thirty million, one hundred sixty-six thousand, three hundred eighty-six".