11866911589 has 8 divisors (see below), whose sum is σ = 12780609632. Its totient is φ = 10953336240.

The previous prime is 11866911533. The next prime is 11866911601. The reversal of 11866911589 is 98511966811.

It is a happy number.

11866911589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11866911589 is a prime.

It is a super-2 number, since 2×11866911589² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11866911509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312382 + ... + 348304.

It is an arithmetic number, because the mean of its divisors is an integer number (1597576204).

Almost surely, 2^11866911589 is an apocalyptic number.

It is an amenable number.

11866911589 is a deficient number, since it is larger than the sum of its proper divisors (913698043).

11866911589 is a wasteful number, since it uses less digits than its factorization.

11866911589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61347.

The product of its digits is 933120, while the sum is 55.

The spelling of 11866911589 in words is "eleven billion, eight hundred sixty-six million, nine hundred eleven thousand, five hundred eighty-nine".