11665066111 has 12 divisors (see below), whose sum is σ = 12309174072. Its totient is φ = 11050274144.

The previous prime is 11665066097. The next prime is 11665066123. The reversal of 11665066111 is 11166056611.

It is not a de Polignac number, because 11665066111 - 2⁵ = 11665066079 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 (11665066181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86281 + ... + 175426.

It is an arithmetic number, because the mean of its divisors is an integer number (1025764506).

Almost surely, 2^11665066111 is an apocalyptic number.

11665066111 is a deficient number, since it is larger than the sum of its proper divisors (644107961).

11665066111 is an equidigital number, since it uses as much as digits as its factorization.

11665066111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261818 (or 261789 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 11665066111 in words is "eleven billion, six hundred sixty-five million, sixty-six thousand, one hundred eleven".