5666499361 has 2 divisors, whose sum is σ = 5666499362. Its totient is φ = 5666499360.

The previous prime is 5666499323. The next prime is 5666499379. The reversal of 5666499361 is 1639946665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5628750625 + 37748736 = 75025^2 + 6144^2 .

It is a cyclic number.

It is not a de Polignac number, because 5666499361 - 2¹⁷ = 5666368289 is a prime.

It is not a weakly prime, because it can be changed into another prime (5666499061) 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, 2833249680 + 2833249681.

It is an arithmetic number, because the mean of its divisors is an integer number (2833249681).

Almost surely, 2^5666499361 is an apocalyptic number.

It is an amenable number.

5666499361 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666499361 is an equidigital number, since it uses as much as digits as its factorization.

5666499361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6298560, while the sum is 55.

The square root of 5666499361 is about 75276.1539997893. The cubic root of 5666499361 is about 1782.8095345303.

It can be divided in two parts, 56664 and 99361, that added together give a square (156025 = 395²).

The spelling of 5666499361 in words is "five billion, six hundred sixty-six million, four hundred ninety-nine thousand, three hundred sixty-one".