11366305661 has 2 divisors, whose sum is σ = 11366305662. Its totient is φ = 11366305660.

The previous prime is 11366305649. The next prime is 11366305667. The reversal of 11366305661 is 16650366311.

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., 9739716100 + 1626589561 = 98690^2 + 40331^2 .

It is a cyclic number.

It is not a de Polignac number, because 11366305661 - 2¹⁸ = 11366043517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11366305667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5683152830 + 5683152831.

It is an arithmetic number, because the mean of its divisors is an integer number (5683152831).

Almost surely, 2^11366305661 is an apocalyptic number.

It is an amenable number.

11366305661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11366305661 is an equidigital number, since it uses as much as digits as its factorization.

11366305661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The spelling of 11366305661 in words is "eleven billion, three hundred sixty-six million, three hundred five thousand, six hundred sixty-one".