520642605492 has 72 divisors (see below), whose sum is σ = 1324026902016. Its totient is φ = 172500542784.

The previous prime is 520642605491. The next prime is 520642605499. The reversal of 520642605492 is 294506246025.

520642605492 is a `hidden beast` number, since 5 + 2 + 0 + 6 + 42 + 60 + 549 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520642605491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5143998 + ... + 5244234.

It is an arithmetic number, because the mean of its divisors is an integer number (18389262528).

Almost surely, 2^520642605492 is an apocalyptic number.

It is an amenable number.

520642605492 is an abundant number, since it is smaller than the sum of its proper divisors (803384296524).

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

520642605492 is a wasteful number, since it uses less digits than its factorization.

520642605492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101117 (or 101112 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 520642605492 in words is "five hundred twenty billion, six hundred forty-two million, six hundred five thousand, four hundred ninety-two".