12115043644 has 96 divisors (see below), whose sum is σ = 26092684800. Its totient is φ = 4855023360.

The previous prime is 12115043641. The next prime is 12115043669. The reversal of 12115043644 is 44634051121.

12115043644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12115043641) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 702922 + ... + 719950.

It is an arithmetic number, because the mean of its divisors is an integer number (271798800).

Almost surely, 2^12115043644 is an apocalyptic number.

It is an amenable number.

12115043644 is an abundant number, since it is smaller than the sum of its proper divisors (13977641156).

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

12115043644 is a wasteful number, since it uses less digits than its factorization.

12115043644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17123 (or 17121 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 12115043644 its reverse (44634051121), we get a palindrome (56749094765).

The spelling of 12115043644 in words is "twelve billion, one hundred fifteen million, forty-three thousand, six hundred forty-four".