5566166505983 has 2 divisors, whose sum is σ = 5566166505984. Its totient is φ = 5566166505982.

The previous prime is 5566166505923. The next prime is 5566166506051. The reversal of 5566166505983 is 3895056616655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5566166505983 - 2⁶ = 5566166505919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5566166505923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2783083252991 + 2783083252992.

It is an arithmetic number, because the mean of its divisors is an integer number (2783083252992).

Almost surely, 2^{5566166505983} is an apocalyptic number.

5566166505983 is a deficient number, since it is larger than the sum of its proper divisors (1).

5566166505983 is an equidigital number, since it uses as much as digits as its factorization.

5566166505983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960000, while the sum is 65.

The spelling of 5566166505983 in words is "five trillion, five hundred sixty-six billion, one hundred sixty-six million, five hundred five thousand, nine hundred eighty-three".