506615106661 has 8 divisors (see below), whose sum is σ = 512468804160. Its totient is φ = 500782131168.

The previous prime is 506615106649. The next prime is 506615106667. The reversal of 506615106661 is 166601516605.

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 506615106661 - 2³⁵ = 472255368293 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 (506615106667) 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, 5131321 + ... + 5229118.

It is an arithmetic number, because the mean of its divisors is an integer number (64058600520).

Almost surely, 2^506615106661 is an apocalyptic number.

It is an amenable number.

506615106661 is a deficient number, since it is larger than the sum of its proper divisors (5853697499).

506615106661 is a wasteful number, since it uses less digits than its factorization.

506615106661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10361003.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 506615106661 in words is "five hundred six billion, six hundred fifteen million, one hundred six thousand, six hundred sixty-one".