9885966111 has 32 divisors (see below), whose sum is σ = 16987988480. Its totient is φ = 5564801088.

The previous prime is 9885966071. The next prime is 9885966113. The reversal of 9885966111 is 1116695889.

It is not a de Polignac number, because 9885966111 - 2⁶ = 9885966047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9885966113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 377686 + ... + 403011.

It is an arithmetic number, because the mean of its divisors is an integer number (530874640).

Almost surely, 2^9885966111 is an apocalyptic number.

9885966111 is a deficient number, since it is larger than the sum of its proper divisors (7102022369).

9885966111 is a wasteful number, since it uses less digits than its factorization.

9885966111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780780 (or 780774 counting only the distinct ones).

The product of its digits is 933120, while the sum is 54.

The square root of 9885966111 is about 99428.1957545243. The cubic root of 9885966111 is about 2146.2140772347.

The spelling of 9885966111 in words is "nine billion, eight hundred eighty-five million, nine hundred sixty-six thousand, one hundred eleven".