11631115166 has 16 divisors (see below), whose sum is σ = 19042451568. Its totient is φ = 5284171200.

The previous prime is 11631115151. The next prime is 11631115169. The reversal of 11631115166 is 66151113611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11631115169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90575 + ... + 177386.

It is an arithmetic number, because the mean of its divisors is an integer number (1190153223).

Almost surely, 2^11631115166 is an apocalyptic number.

11631115166 is a deficient number, since it is larger than the sum of its proper divisors (7411336402).

11631115166 is a wasteful number, since it uses less digits than its factorization.

11631115166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269947.

The product of its digits is 3240, while the sum is 32.

Adding to 11631115166 its reverse (66151113611), we get a palindrome (77782228777).

The spelling of 11631115166 in words is "eleven billion, six hundred thirty-one million, one hundred fifteen thousand, one hundred sixty-six".