516656066717 has 4 divisors (see below), whose sum is σ = 590464076256. Its totient is φ = 442848057180.

The previous prime is 516656066711. The next prime is 516656066753. The reversal of 516656066717 is 717660656615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 516656066717 - 2¹⁰ = 516656065693 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 (516656066711) 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, 36904004759 + ... + 36904004772.

It is an arithmetic number, because the mean of its divisors is an integer number (147616019064).

Almost surely, 2^516656066717 is an apocalyptic number.

It is an amenable number.

516656066717 is a deficient number, since it is larger than the sum of its proper divisors (73808009539).

516656066717 is an equidigital number, since it uses as much as digits as its factorization.

516656066717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73808009538.

The product of its (nonzero) digits is 9525600, while the sum is 56.

The spelling of 516656066717 in words is "five hundred sixteen billion, six hundred fifty-six million, sixty-six thousand, seven hundred seventeen".