9966443111 has 2 divisors, whose sum is σ = 9966443112. Its totient is φ = 9966443110.

The previous prime is 9966443101. The next prime is 9966443143. The reversal of 9966443111 is 1113446699.

9966443111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (1113446699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9966443111 - 2³⁰ = 8892701287 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9966443101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4983221555 + 4983221556.

It is an arithmetic number, because the mean of its divisors is an integer number (4983221556).

Almost surely, 2^9966443111 is an apocalyptic number.

9966443111 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966443111 is an equidigital number, since it uses as much as digits as its factorization.

9966443111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 44.

The square root of 9966443111 is about 99832.0745602334. The cubic root of 9966443111 is about 2152.0221185446.

The spelling of 9966443111 in words is "nine billion, nine hundred sixty-six million, four hundred forty-three thousand, one hundred eleven".