520405866612 has 96 divisors (see below), whose sum is σ = 1354911465600. Its totient is φ = 172735462656.

The previous prime is 520405866611. The next prime is 520405866619. The reversal of 520405866612 is 216668504025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520405866611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36762928 + ... + 36777080.

It is an arithmetic number, because the mean of its divisors is an integer number (14113661100).

Almost surely, 2^520405866612 is an apocalyptic number.

It is an amenable number.

520405866612 is an abundant number, since it is smaller than the sum of its proper divisors (834505598988).

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

520405866612 is a wasteful number, since it uses less digits than its factorization.

520405866612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15582 (or 15574 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 520405866612 in words is "five hundred twenty billion, four hundred five million, eight hundred sixty-six thousand, six hundred twelve".