2112378113663 has 16 divisors (see below), whose sum is σ = 2278767286272. Its totient is φ = 1952398404000.

The previous prime is 2112378113633. The next prime is 2112378113669. The reversal of 2112378113663 is 3663118732112.

It is a cyclic number.

It is not a de Polignac number, because 2112378113663 - 2¹⁰ = 2112378112639 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 (2112378113669) 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, 1769753 + ... + 2712338.

It is an arithmetic number, because the mean of its divisors is an integer number (142422955392).

Almost surely, 2^{2112378113663} is an apocalyptic number.

2112378113663 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2112378113663 is a deficient number, since it is larger than the sum of its proper divisors (166389172609).

2112378113663 is a wasteful number, since it uses less digits than its factorization.

2112378113663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482806.

The product of its digits is 217728, while the sum is 44.

The spelling of 2112378113663 in words is "two trillion, one hundred twelve billion, three hundred seventy-eight million, one hundred thirteen thousand, six hundred sixty-three".