11966389717 has 2 divisors, whose sum is σ = 11966389718. Its totient is φ = 11966389716.

The previous prime is 11966389679. The next prime is 11966389769. The reversal of 11966389717 is 71798366911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6424182801 + 5542206916 = 80151^2 + 74446^2 .

It is a cyclic number.

It is not a de Polignac number, because 11966389717 - 2¹⁵ = 11966356949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11966389417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5983194858 + 5983194859.

It is an arithmetic number, because the mean of its divisors is an integer number (5983194859).

Almost surely, 2^11966389717 is an apocalyptic number.

It is an amenable number.

11966389717 is a deficient number, since it is larger than the sum of its proper divisors (1).

11966389717 is an equidigital number, since it uses as much as digits as its factorization.

11966389717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 58.

The spelling of 11966389717 in words is "eleven billion, nine hundred sixty-six million, three hundred eighty-nine thousand, seven hundred seventeen".