517097807561 has 8 divisors (see below), whose sum is σ = 525259023744. Its totient is φ = 508982570640.

The previous prime is 517097807543. The next prime is 517097807563. The reversal of 517097807561 is 165708790715.

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 517097807561 - 2⁶ = 517097807497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 517097807497 and 517097807506.

It is not an unprimeable number, because it can be changed into a prime (517097807563) 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, 11472146 + ... + 11517131.

It is an arithmetic number, because the mean of its divisors is an integer number (65657377968).

Almost surely, 2^517097807561 is an apocalyptic number.

It is an amenable number.

517097807561 is a deficient number, since it is larger than the sum of its proper divisors (8161216183).

517097807561 is a wasteful number, since it uses less digits than its factorization.

517097807561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22989631.

The product of its (nonzero) digits is 3704400, while the sum is 56.

The spelling of 517097807561 in words is "five hundred seventeen billion, ninety-seven million, eight hundred seven thousand, five hundred sixty-one".