521315630620 has 48 divisors (see below), whose sum is σ = 1099683775008. Its totient is φ = 207589294080.

The previous prime is 521315630599. The next prime is 521315630623. The reversal of 521315630620 is 26036513125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521315630623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33996355 + ... + 34011685.

It is an arithmetic number, because the mean of its divisors is an integer number (22910078646).

Almost surely, 2^521315630620 is an apocalyptic number.

It is an amenable number.

521315630620 is an abundant number, since it is smaller than the sum of its proper divisors (578368144388).

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

521315630620 is a wasteful number, since it uses less digits than its factorization.

521315630620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22870 (or 22868 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 521315630620 in words is "five hundred twenty-one billion, three hundred fifteen million, six hundred thirty thousand, six hundred twenty".