11663111689 has 2 divisors, whose sum is σ = 11663111690. Its totient is φ = 11663111688.

The previous prime is 11663111671. The next prime is 11663111693. The reversal of 11663111689 is 98611136611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7708840000 + 3954271689 = 87800^2 + 62883^2 .

It is a cyclic number.

It is not a de Polignac number, because 11663111689 - 2⁵ = 11663111657 is a prime.

It is not a weakly prime, because it can be changed into another prime (11663111659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831555844 + 5831555845.

It is an arithmetic number, because the mean of its divisors is an integer number (5831555845).

Almost surely, 2^11663111689 is an apocalyptic number.

It is an amenable number.

11663111689 is a deficient number, since it is larger than the sum of its proper divisors (1).

11663111689 is an equidigital number, since it uses as much as digits as its factorization.

11663111689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 43.

The spelling of 11663111689 in words is "eleven billion, six hundred sixty-three million, one hundred eleven thousand, six hundred eighty-nine".