12116389849 has 4 divisors (see below), whose sum is σ = 12177894564. Its totient is φ = 12054885136.

The previous prime is 12116389841. The next prime is 12116389861. The reversal of 12116389849 is 94898361121.

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 8702091225 + 3414298624 = 93285^2 + 58432^2 .

It is a cyclic number.

It is not a de Polignac number, because 12116389849 - 2³ = 12116389841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12116389796 and 12116389805.

It is not an unprimeable number, because it can be changed into a prime (12116389841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30752062 + ... + 30752455.

It is an arithmetic number, because the mean of its divisors is an integer number (3044473641).

Almost surely, 2^12116389849 is an apocalyptic number.

It is an amenable number.

12116389849 is a deficient number, since it is larger than the sum of its proper divisors (61504715).

12116389849 is an equidigital number, since it uses as much as digits as its factorization.

12116389849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61504714.

The product of its digits is 746496, while the sum is 52.

The spelling of 12116389849 in words is "twelve billion, one hundred sixteen million, three hundred eighty-nine thousand, eight hundred forty-nine".