12168199669 has 8 divisors (see below), whose sum is σ = 12429038520. Its totient is φ = 11908518336.

The previous prime is 12168199661. The next prime is 12168199699. The reversal of 12168199669 is 96699186121.

It can be written as a sum of positive squares in 4 ways, for example, as 3827030769 + 8341168900 = 61863^2 + 91330^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12168199669 - 2³ = 12168199661 is a prime.

It is a super-3 number, since 3×12168199669³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12168199661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268114 + ... + 310195.

It is an arithmetic number, because the mean of its divisors is an integer number (1553629815).

Almost surely, 2^12168199669 is an apocalyptic number.

It is an amenable number.

12168199669 is a deficient number, since it is larger than the sum of its proper divisors (260838851).

12168199669 is an equidigital number, since it uses as much as digits as its factorization.

12168199669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578759.

The product of its digits is 2519424, while the sum is 58.

The spelling of 12168199669 in words is "twelve billion, one hundred sixty-eight million, one hundred ninety-nine thousand, six hundred sixty-nine".