11155166219 has 4 divisors (see below), whose sum is σ = 11289565896. Its totient is φ = 11020766544.

The previous prime is 11155166213. The next prime is 11155166237. The reversal of 11155166219 is 91266155111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11155166219 - 2²⁸ = 10886730763 is a prime.

It is a super-2 number, since 2×11155166219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11155166213) 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, 67199714 + ... + 67199879.

It is an arithmetic number, because the mean of its divisors is an integer number (2822391474).

Almost surely, 2^11155166219 is an apocalyptic number.

11155166219 is a deficient number, since it is larger than the sum of its proper divisors (134399677).

11155166219 is an equidigital number, since it uses as much as digits as its factorization.

11155166219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134399676.

The product of its digits is 16200, while the sum is 38.

The spelling of 11155166219 in words is "eleven billion, one hundred fifty-five million, one hundred sixty-six thousand, two hundred nineteen".