11155661550166 has 8 divisors (see below), whose sum is σ = 19123991228880. Its totient is φ = 4780997807208.

The previous prime is 11155661550161. The next prime is 11155661550203. The reversal of 11155661550166 is 66105516655111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155661550161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398416483921 + ... + 398416483948.

It is an arithmetic number, because the mean of its divisors is an integer number (2390498903610).

Almost surely, 2^{11155661550166} is an apocalyptic number.

11155661550166 is a deficient number, since it is larger than the sum of its proper divisors (7968329678714).

11155661550166 is an equidigital number, since it uses as much as digits as its factorization.

11155661550166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796832967878.

The product of its (nonzero) digits is 810000, while the sum is 49.

The spelling of 11155661550166 in words is "eleven trillion, one hundred fifty-five billion, six hundred sixty-one million, five hundred fifty thousand, one hundred sixty-six".