10666243249 has 2 divisors, whose sum is σ = 10666243250. Its totient is φ = 10666243248.

The previous prime is 10666243187. The next prime is 10666243279. The reversal of 10666243249 is 94234266601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10623012624 + 43230625 = 103068^2 + 6575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10666243249 is a prime.

It is a super-2 number, since 2×10666243249² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10666243279) 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, 5333121624 + 5333121625.

It is an arithmetic number, because the mean of its divisors is an integer number (5333121625).

Almost surely, 2^10666243249 is an apocalyptic number.

It is an amenable number.

10666243249 is a deficient number, since it is larger than the sum of its proper divisors (1).

10666243249 is an equidigital number, since it uses as much as digits as its factorization.

10666243249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 10666243249 in words is "ten billion, six hundred sixty-six million, two hundred forty-three thousand, two hundred forty-nine".