521324324013 has 16 divisors (see below), whose sum is σ = 699306209280. Its totient is φ = 345446261616.

The previous prime is 521324323981. The next prime is 521324324033. The reversal of 521324324013 is 310423423125.

It is not a de Polignac number, because 521324324013 - 2⁵ = 521324323981 is a prime.

It is a super-2 number, since 2×521324324013² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521324324033) 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, 12427408 + ... + 12469286.

It is an arithmetic number, because the mean of its divisors is an integer number (43706638080).

Almost surely, 2^521324324013 is an apocalyptic number.

It is an amenable number.

521324324013 is a deficient number, since it is larger than the sum of its proper divisors (177981885267).

521324324013 is a wasteful number, since it uses less digits than its factorization.

521324324013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66896.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 521324324013 its reverse (310423423125), we get a palindrome (831747747138).

The spelling of 521324324013 in words is "five hundred twenty-one billion, three hundred twenty-four million, three hundred twenty-four thousand, thirteen".