12236643140 has 12 divisors (see below), whose sum is σ = 25696950636. Its totient is φ = 4894657248.

The previous prime is 12236643079. The next prime is 12236643161. The reversal of 12236643140 is 4134663221.

12236643140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6512812804 + 5723830336 = 80702^2 + 75656^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12236643097 and 12236643106.

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, 305916059 + ... + 305916098.

It is an arithmetic number, because the mean of its divisors is an integer number (2141412553).

Almost surely, 2^12236643140 is an apocalyptic number.

12236643140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12236643140 is an abundant number, since it is smaller than the sum of its proper divisors (13460307496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12236643140 is a wasteful number, since it uses less digits than its factorization.

12236643140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611832166 (or 611832164 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 12236643140 in words is "twelve billion, two hundred thirty-six million, six hundred forty-three thousand, one hundred forty".