5666516061651 has 6 divisors (see below), whose sum is σ = 8184967644620. Its totient is φ = 3777677374428.

The previous prime is 5666516061649. The next prime is 5666516061691. The reversal of 5666516061651 is 1561606156665.

It is not a de Polignac number, because 5666516061651 - 2¹ = 5666516061649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5666516061611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 314806447861 + ... + 314806447878.

Almost surely, 2^{5666516061651} is an apocalyptic number.

5666516061651 is a deficient number, since it is larger than the sum of its proper divisors (2518451582969).

5666516061651 is a wasteful number, since it uses less digits than its factorization.

5666516061651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629612895745 (or 629612895742 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The spelling of 5666516061651 in words is "five trillion, six hundred sixty-six billion, five hundred sixteen million, sixty-one thousand, six hundred fifty-one".