521523132130 has 96 divisors (see below), whose sum is σ = 1269957169152. Its totient is φ = 150048581760.

The previous prime is 521523132077. The next prime is 521523132187. The reversal of 521523132130 is 31231325125.

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 47 ways as a sum of consecutive naturals, for example, 2258082 + ... + 2478301.

It is an arithmetic number, because the mean of its divisors is an integer number (13228720512).

Almost surely, 2^521523132130 is an apocalyptic number.

521523132130 is an abundant number, since it is smaller than the sum of its proper divisors (748434037022).

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

521523132130 is a wasteful number, since it uses less digits than its factorization.

521523132130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4736432 (or 4736421 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 521523132130 its reverse (31231325125), we get a palindrome (552754457255).

The spelling of 521523132130 in words is "five hundred twenty-one billion, five hundred twenty-three million, one hundred thirty-two thousand, one hundred thirty".