2112344778423 has 12 divisors (see below), whose sum is σ = 3095778022904. Its totient is φ = 1280208956400.

The previous prime is 2112344778409. The next prime is 2112344778457. The reversal of 2112344778423 is 3248774432112.

It is not a de Polignac number, because 2112344778423 - 2¹² = 2112344774327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112344778403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2909565448 + ... + 2909566173.

Almost surely, 2^{2112344778423} is an apocalyptic number.

2112344778423 is a deficient number, since it is larger than the sum of its proper divisors (983433244481).

2112344778423 is a wasteful number, since it uses less digits than its factorization.

2112344778423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819131646 (or 5819131635 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 48.

The spelling of 2112344778423 in words is "two trillion, one hundred twelve billion, three hundred forty-four million, seven hundred seventy-eight thousand, four hundred twenty-three".