11689285689 has 45 divisors (see below), whose sum is σ = 17959351069. Its totient is φ = 7576839360.

The previous prime is 11689285687. The next prime is 11689285691. The reversal of 11689285689 is 98658298611.

The square root of 11689285689 is 108117.

It is a perfect power (a square), and thus also a powerful number.

11689285689 is a `hidden beast` number, since 1 + 1 + 68 + 9 + 2 + 8 + 568 + 9 = 666.

11689285689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11689285687) and next prime (11689285691).

It can be written as a sum of positive squares in 4 ways, for example, as 1946025 + 11687339664 = 1395^2 + 108108^2 .

It is not a de Polignac number, because 11689285689 - 2¹ = 11689285687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11689285681) 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 44 ways as a sum of consecutive naturals, for example, 39895027 + ... + 39895319.

Almost surely, 2^11689285689 is an apocalyptic number.

11689285689 is the 108117-th square number.

11689285689 is the 54059-th centered octagonal number.

It is an amenable number.

11689285689 is a deficient number, since it is larger than the sum of its proper divisors (6270065380).

11689285689 is an frugal number, since it uses more digits than its factorization.

11689285689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 337 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 63.

The spelling of 11689285689 in words is "eleven billion, six hundred eighty-nine million, two hundred eighty-five thousand, six hundred eighty-nine".