11665686333 has 16 divisors (see below), whose sum is σ = 18189687296. Its totient is φ = 6511080240.

The previous prime is 11665686293. The next prime is 11665686359. The reversal of 11665686333 is 33368656611.

It is a happy number.

It is not a de Polignac number, because 11665686333 - 2²⁶ = 11598577469 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11665686533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6458503 + ... + 6460308.

It is an arithmetic number, because the mean of its divisors is an integer number (1136855456).

Almost surely, 2^11665686333 is an apocalyptic number.

It is an amenable number.

11665686333 is a deficient number, since it is larger than the sum of its proper divisors (6524000963).

11665686333 is a wasteful number, since it uses less digits than its factorization.

11665686333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12918864.

The product of its digits is 1399680, while the sum is 48.

The spelling of 11665686333 in words is "eleven billion, six hundred sixty-five million, six hundred eighty-six thousand, three hundred thirty-three".