520655707212 has 24 divisors (see below), whose sum is σ = 1219346214912. Its totient is φ = 172911488400.

The previous prime is 520655707171. The next prime is 520655707261. The reversal of 520655707212 is 212707556025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80048364 + ... + 80054867.

It is an arithmetic number, because the mean of its divisors is an integer number (50806092288).

Almost surely, 2^520655707212 is an apocalyptic number.

It is an amenable number.

520655707212 is an abundant number, since it is smaller than the sum of its proper divisors (698690507700).

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

520655707212 is a wasteful number, since it uses less digits than its factorization.

520655707212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160103509 (or 160103507 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 42.

The spelling of 520655707212 in words is "five hundred twenty billion, six hundred fifty-five million, seven hundred seven thousand, two hundred twelve".