11255566689 has 12 divisors (see below), whose sum is σ = 16279699072. Its totient is φ = 7493715000.

The previous prime is 11255566661. The next prime is 11255566691. The reversal of 11255566689 is 98666555211.

It is not a de Polignac number, because 11255566689 - 2⁵ = 11255566657 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11255566589) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 825877 + ... + 839394.

Almost surely, 2^11255566689 is an apocalyptic number.

It is an amenable number.

11255566689 is a deficient number, since it is larger than the sum of its proper divisors (5024132383).

11255566689 is a wasteful number, since it uses less digits than its factorization.

11255566689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666028 (or 1666025 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 54.

The spelling of 11255566689 in words is "eleven billion, two hundred fifty-five million, five hundred sixty-six thousand, six hundred eighty-nine".