11630442661 has 2 divisors, whose sum is σ = 11630442662. Its totient is φ = 11630442660.

The previous prime is 11630442643. The next prime is 11630442671. The reversal of 11630442661 is 16624403611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8999368225 + 2631074436 = 94865^2 + 51294^2 .

It is a cyclic number.

It is not a de Polignac number, because 11630442661 - 2⁷ = 11630442533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11630442641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5815221330 + 5815221331.

It is an arithmetic number, because the mean of its divisors is an integer number (5815221331).

Almost surely, 2^11630442661 is an apocalyptic number.

It is an amenable number.

11630442661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11630442661 is an equidigital number, since it uses as much as digits as its factorization.

11630442661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 11630442661 in words is "eleven billion, six hundred thirty million, four hundred forty-two thousand, six hundred sixty-one".