11859585685 has 4 divisors (see below), whose sum is σ = 14231502828. Its totient is φ = 9487668544.

The previous prime is 11859585677. The next prime is 11859585697. The reversal of 11859585685 is 58658595811.

11859585685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7447172209 + 4412413476 = 86297^2 + 66426^2 .

It is a cyclic number.

It is not a de Polignac number, because 11859585685 - 2³ = 11859585677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1185958564 + ... + 1185958573.

It is an arithmetic number, because the mean of its divisors is an integer number (3557875707).

Almost surely, 2^11859585685 is an apocalyptic number.

It is an amenable number.

11859585685 is a deficient number, since it is larger than the sum of its proper divisors (2371917143).

11859585685 is an equidigital number, since it uses as much as digits as its factorization.

11859585685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371917142.

The product of its digits is 17280000, while the sum is 61.

The spelling of 11859585685 in words is "eleven billion, eight hundred fifty-nine million, five hundred eighty-five thousand, six hundred eighty-five".