11166256089 has 6 divisors (see below), whose sum is σ = 16129036586. Its totient is φ = 7444170720.

The previous prime is 11166256037. The next prime is 11166256097. The reversal of 11166256089 is 98065266111.

11166256089 is a `hidden beast` number, since 1 + 1 + 1 + 6 + 6 + 2 + 560 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6481538064 + 4684718025 = 80508^2 + 68445^2 .

It is not a de Polignac number, because 11166256089 - 2²⁰ = 11165207513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11166256009) 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 5 ways as a sum of consecutive naturals, for example, 620347552 + ... + 620347569.

Almost surely, 2^11166256089 is an apocalyptic number.

It is an amenable number.

11166256089 is a deficient number, since it is larger than the sum of its proper divisors (4962780497).

11166256089 is a wasteful number, since it uses less digits than its factorization.

11166256089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240695127 (or 1240695124 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 11166256089 in words is "eleven billion, one hundred sixty-six million, two hundred fifty-six thousand, eighty-nine".