12189169746749 has 4 divisors (see below), whose sum is σ = 12192338237664. Its totient is φ = 12186001255836.

The previous prime is 12189169746703. The next prime is 12189169746799. The reversal of 12189169746749 is 94764796198121.

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 12189169746749 - 2²⁴ = 12189152969533 is a prime.

It is a super-2 number, since 2×12189169746749² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12189169746799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1584239687 + ... + 1584247380.

It is an arithmetic number, because the mean of its divisors is an integer number (3048084559416).

Almost surely, 2^{12189169746749} is an apocalyptic number.

It is an amenable number.

12189169746749 is a deficient number, since it is larger than the sum of its proper divisors (3168490915).

12189169746749 is an equidigital number, since it uses as much as digits as its factorization.

12189169746749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168490914.

The product of its digits is 329204736, while the sum is 74.

The spelling of 12189169746749 in words is "twelve trillion, one hundred eighty-nine billion, one hundred sixty-nine million, seven hundred forty-six thousand, seven hundred forty-nine".