513104372717 has 4 divisors (see below), whose sum is σ = 513828074940. Its totient is φ = 512380670496.

The previous prime is 513104372689. The next prime is 513104372723. The reversal of 513104372717 is 717273401315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 163296001801 + 349808370916 = 404099^2 + 591446^2 .

It is a cyclic number.

It is not a de Polignac number, because 513104372717 - 2³² = 508809405421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513104372747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361850048 + ... + 361851465.

It is an arithmetic number, because the mean of its divisors is an integer number (128457018735).

Almost surely, 2^513104372717 is an apocalyptic number.

It is an amenable number.

513104372717 is a deficient number, since it is larger than the sum of its proper divisors (723702223).

513104372717 is an equidigital number, since it uses as much as digits as its factorization.

513104372717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723702222.

The product of its (nonzero) digits is 123480, while the sum is 41.

The spelling of 513104372717 in words is "five hundred thirteen billion, one hundred four million, three hundred seventy-two thousand, seven hundred seventeen".