12108240302549 has 4 divisors (see below), whose sum is σ = 12196621618764. Its totient is φ = 12019858986336.

The previous prime is 12108240302413. The next prime is 12108240302573. The reversal of 12108240302549 is 94520304280121.

12108240302549 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 10090724028100 + 2017516274449 = 3176590^2 + 1420393^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12108240302549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12108260302549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44190657902 + ... + 44190658175.

It is an arithmetic number, because the mean of its divisors is an integer number (3049155404691).

Almost surely, 2^{12108240302549} is an apocalyptic number.

It is an amenable number.

12108240302549 is a deficient number, since it is larger than the sum of its proper divisors (88381316215).

12108240302549 is an equidigital number, since it uses as much as digits as its factorization.

12108240302549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88381316214.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 12108240302549 in words is "twelve trillion, one hundred eight billion, two hundred forty million, three hundred two thousand, five hundred forty-nine".