66005941249 has 2 divisors, whose sum is σ = 66005941250. Its totient is φ = 66005941248.

The previous prime is 66005941207. The next prime is 66005941273. The reversal of 66005941249 is 94214950066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40067228224 + 25938713025 = 200168^2 + 161055^2 .

It is a cyclic number.

It is not a de Polignac number, because 66005941249 - 2¹⁷ = 66005810177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66005941199 and 66005941208.

It is not a weakly prime, because it can be changed into another prime (66005941279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33002970624 + 33002970625.

It is an arithmetic number, because the mean of its divisors is an integer number (33002970625).

Almost surely, 2^66005941249 is an apocalyptic number.

It is an amenable number.

66005941249 is a deficient number, since it is larger than the sum of its proper divisors (1).

66005941249 is an equidigital number, since it uses as much as digits as its factorization.

66005941249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 66005941249 in words is "sixty-six billion, five million, nine hundred forty-one thousand, two hundred forty-nine".