123344567889 has 16 divisors (see below), whose sum is σ = 178183127232. Its totient is φ = 75592839168.

The previous prime is 123344567887. The next prime is 123344567953. The reversal of 123344567889 is 988765443321.

It is not a de Polignac number, because 123344567889 - 2¹ = 123344567887 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (123344567887) 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, 28120144 + ... + 28124529.

It is an arithmetic number, because the mean of its divisors is an integer number (11136445452).

Almost surely, 2^123344567889 is an apocalyptic number.

It is an amenable number.

123344567889 is a deficient number, since it is larger than the sum of its proper divisors (54838559343).

123344567889 is a wasteful number, since it uses less digits than its factorization.

123344567889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56244736.

The product of its digits is 34836480, while the sum is 60.

The spelling of 123344567889 in words is "one hundred twenty-three billion, three hundred forty-four million, five hundred sixty-seven thousand, eight hundred eighty-nine".