521520424430513 has 8 divisors (see below), whose sum is σ = 539504245488000. Its totient is φ = 503536627249488.

The previous prime is 521520424430497. The next prime is 521520424430527. The reversal of 521520424430513 is 315034424025125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 521520424430513 - 2⁴ = 521520424430497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (521520424430563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46195838 + ... + 56365736.

It is an arithmetic number, because the mean of its divisors is an integer number (67438030686000).

Almost surely, 2^{521520424430513} is an apocalyptic number.

It is an amenable number.

521520424430513 is a deficient number, since it is larger than the sum of its proper divisors (17983821057487).

521520424430513 is a wasteful number, since it uses less digits than its factorization.

521520424430513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11938231.

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 521520424430513 its reverse (315034424025125), we get a palindrome (836554848455638).

The spelling of 521520424430513 in words is "five hundred twenty-one trillion, five hundred twenty billion, four hundred twenty-four million, four hundred thirty thousand, five hundred thirteen".