2644112123 has 4 divisors (see below), whose sum is σ = 2645113680. Its totient is φ = 2643110568.

The previous prime is 2644112113. The next prime is 2644112147. The reversal of 2644112123 is 3212114462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2644112123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2644112092 and 2644112101.

It is not an unprimeable number, because it can be changed into a prime (2644112113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496808 + ... + 502101.

It is an arithmetic number, because the mean of its divisors is an integer number (661278420).

Almost surely, 2^2644112123 is an apocalyptic number.

2644112123 is a deficient number, since it is larger than the sum of its proper divisors (1001557).

2644112123 is an equidigital number, since it uses as much as digits as its factorization.

2644112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001556.

The product of its digits is 2304, while the sum is 26.

The square root of 2644112123 is about 51420.9307869860. The cubic root of 2644112123 is about 1382.8018623910.

Adding to 2644112123 its reverse (3212114462), we get a palindrome (5856226585).

The spelling of 2644112123 in words is "two billion, six hundred forty-four million, one hundred twelve thousand, one hundred twenty-three".