2112544643 has 16 divisors (see below), whose sum is σ = 2386908000. Its totient is φ = 1852058880.

The previous prime is 2112544601. The next prime is 2112544723. The reversal of 2112544643 is 3464452112.

It is a cyclic number.

It is not a de Polignac number, because 2112544643 - 2¹⁰ = 2112543619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112544843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300533 + ... + 307481.

It is an arithmetic number, because the mean of its divisors is an integer number (149181750).

Almost surely, 2^2112544643 is an apocalyptic number.

2112544643 is a deficient number, since it is larger than the sum of its proper divisors (274363357).

2112544643 is a wasteful number, since it uses less digits than its factorization.

2112544643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7942.

The product of its digits is 23040, while the sum is 32.

The square root of 2112544643 is about 45962.4264263757. The cubic root of 2112544643 is about 1283.1240104688.

Adding to 2112544643 its reverse (3464452112), we get a palindrome (5576996755).

The spelling of 2112544643 in words is "two billion, one hundred twelve million, five hundred forty-four thousand, six hundred forty-three".