521532132320 has 96 divisors (see below), whose sum is σ = 1261642912992. Its totient is φ = 203620902912.

The previous prime is 521532132313. The next prime is 521532132367. The reversal of 521532132320 is 23231235125.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 10246454 + ... + 10297226.

It is an arithmetic number, because the mean of its divisors is an integer number (13142113677).

Almost surely, 2^521532132320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521532132320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630821456496).

521532132320 is an abundant number, since it is smaller than the sum of its proper divisors (740110780672).

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

521532132320 is a wasteful number, since it uses less digits than its factorization.

521532132320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52324 (or 52316 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 521532132320 its reverse (23231235125), we get a palindrome (544763367445).

The spelling of 521532132320 in words is "five hundred twenty-one billion, five hundred thirty-two million, one hundred thirty-two thousand, three hundred twenty".