12016585909 has 8 divisors (see below), whose sum is σ = 12033660600. Its totient is φ = 11999526336.

The previous prime is 12016585897. The next prime is 12016585937. The reversal of 12016585909 is 90958561021.

It can be written as a sum of positive squares in 4 ways, for example, as 2753100900 + 9263485009 = 52470^2 + 96247^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12016585909 - 2⁵ = 12016585877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12016585969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2905407 + ... + 2909539.

It is an arithmetic number, because the mean of its divisors is an integer number (1504207575).

Almost surely, 2^12016585909 is an apocalyptic number.

It is an amenable number.

12016585909 is a deficient number, since it is larger than the sum of its proper divisors (17074691).

12016585909 is a wasteful number, since it uses less digits than its factorization.

12016585909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7559.

The product of its (nonzero) digits is 194400, while the sum is 46.

The spelling of 12016585909 in words is "twelve billion, sixteen million, five hundred eighty-five thousand, nine hundred nine".