11155000111165 has 4 divisors (see below), whose sum is σ = 13386000133404. Its totient is φ = 8924000088928.

The previous prime is 11155000111147. The next prime is 11155000111181. The reversal of 11155000111165 is 56111100055111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7342614995076 + 3812385116089 = 2709726^2 + 1952533^2 .

It is a cyclic number.

It is not a de Polignac number, because 11155000111165 - 2³⁷ = 11017561157693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115500011112 + ... + 1115500011121.

It is an arithmetic number, because the mean of its divisors is an integer number (3346500033351).

Almost surely, 2^{11155000111165} is an apocalyptic number.

It is an amenable number.

11155000111165 is a deficient number, since it is larger than the sum of its proper divisors (2231000022239).

11155000111165 is an equidigital number, since it uses as much as digits as its factorization.

11155000111165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231000022238.

The product of its (nonzero) digits is 750, while the sum is 28.

Adding to 11155000111165 its reverse (56111100055111), we get a palindrome (67266100166276).

The spelling of 11155000111165 in words is "eleven trillion, one hundred fifty-five billion, one hundred eleven thousand, one hundred sixty-five".