12168023789 has 4 divisors (see below), whose sum is σ = 12248606880. Its totient is φ = 12087440700.

The previous prime is 12168023779. The next prime is 12168023801. The reversal of 12168023789 is 98732086121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12168023789 - 2⁴ = 12168023773 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 (12168023779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40291319 + ... + 40291620.

It is an arithmetic number, because the mean of its divisors is an integer number (3062151720).

Almost surely, 2^12168023789 is an apocalyptic number.

It is an amenable number.

12168023789 is a deficient number, since it is larger than the sum of its proper divisors (80583091).

12168023789 is an equidigital number, since it uses as much as digits as its factorization.

12168023789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80583090.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 12168023789 in words is "twelve billion, one hundred sixty-eight million, twenty-three thousand, seven hundred eighty-nine".