11156665111 has 8 divisors (see below), whose sum is σ = 11407585280. Its totient is φ = 10908487512.

The previous prime is 11156665099. The next prime is 11156665127.

11156665111 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 11156665111 - 2⁷ = 11156664983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11156665141) 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, 677415 + ... + 693688.

It is an arithmetic number, because the mean of its divisors is an integer number (1425948160).

Almost surely, 2^11156665111 is an apocalyptic number.

11156665111 is a deficient number, since it is larger than the sum of its proper divisors (250920169).

11156665111 is a wasteful number, since it uses less digits than its factorization.

11156665111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371285.

The product of its digits is 5400, while the sum is 34.

The spelling of 11156665111 in words is "eleven billion, one hundred fifty-six million, six hundred sixty-five thousand, one hundred eleven".