5566165939 has 2 divisors, whose sum is σ = 5566165940. Its totient is φ = 5566165938.

The previous prime is 5566165889. The next prime is 5566165951. The reversal of 5566165939 is 9395616655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5566165939 - 2⁷ = 5566165811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5566165939.

It is not a weakly prime, because it can be changed into another prime (5566160939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2783082969 + 2783082970.

It is an arithmetic number, because the mean of its divisors is an integer number (2783082970).

Almost surely, 2^5566165939 is an apocalyptic number.

5566165939 is a deficient number, since it is larger than the sum of its proper divisors (1).

5566165939 is an equidigital number, since it uses as much as digits as its factorization.

5566165939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6561000, while the sum is 55.

The square root of 5566165939 is about 74606.7419138512. The cubic root of 5566165939 is about 1772.2244197478.

The spelling of 5566165939 in words is "five billion, five hundred sixty-six million, one hundred sixty-five thousand, nine hundred thirty-nine".