513320435412521 has 8 divisors (see below), whose sum is σ = 566732747970144. Its totient is φ = 461032592593120.

The previous prime is 513320435412487. The next prime is 513320435412523. The reversal of 513320435412521 is 125214534023315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513320435412521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513320435412523) 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, 281117433596 + ... + 281117435421.

It is an arithmetic number, because the mean of its divisors is an integer number (70841593496268).

Almost surely, 2^{513320435412521} is an apocalyptic number.

It is an amenable number.

513320435412521 is a deficient number, since it is larger than the sum of its proper divisors (53412312557623).

513320435412521 is a wasteful number, since it uses less digits than its factorization.

513320435412521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562234869111.

The product of its (nonzero) digits is 432000, while the sum is 41.

Adding to 513320435412521 its reverse (125214534023315), we get a palindrome (638534969435836).

The spelling of 513320435412521 in words is "five hundred thirteen trillion, three hundred twenty billion, four hundred thirty-five million, four hundred twelve thousand, five hundred twenty-one".