5666683501669 has 2 divisors, whose sum is σ = 5666683501670. Its totient is φ = 5666683501668.

The previous prime is 5666683501651. The next prime is 5666683501723. The reversal of 5666683501669 is 9661053866665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3233900873025 + 2432782628644 = 1798305^2 + 1559738^2 .

It is a cyclic number.

It is not a de Polignac number, because 5666683501669 - 2¹⁷ = 5666683370597 is a prime.

It is a super-2 number, since 2×5666683501669² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5666683501649) 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, 2833341750834 + 2833341750835.

It is an arithmetic number, because the mean of its divisors is an integer number (2833341750835).

Almost surely, 2^{5666683501669} is an apocalyptic number.

It is an amenable number.

5666683501669 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666683501669 is an equidigital number, since it uses as much as digits as its factorization.

5666683501669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 251942400, while the sum is 67.

The spelling of 5666683501669 in words is "five trillion, six hundred sixty-six billion, six hundred eighty-three million, five hundred one thousand, six hundred sixty-nine".