9886668811 has 2 divisors, whose sum is σ = 9886668812. Its totient is φ = 9886668810.

The previous prime is 9886668797. The next prime is 9886668823. The reversal of 9886668811 is 1188666889.

It is a strong prime.

It is an emirp because it is prime and its reverse (1188666889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9886668811 - 2⁹ = 9886668299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9886668811.

It is not a weakly prime, because it can be changed into another prime (9886668851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4943334405 + 4943334406.

It is an arithmetic number, because the mean of its divisors is an integer number (4943334406).

Almost surely, 2^9886668811 is an apocalyptic number.

9886668811 is a deficient number, since it is larger than the sum of its proper divisors (1).

9886668811 is an equidigital number, since it uses as much as digits as its factorization.

9886668811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7962624, while the sum is 61.

The square root of 9886668811 is about 99431.7293976123. The cubic root of 9886668811 is about 2146.2649273955.

The spelling of 9886668811 in words is "nine billion, eight hundred eighty-six million, six hundred sixty-eight thousand, eight hundred eleven".