12189602669 has 4 divisors (see below), whose sum is σ = 12190704444. Its totient is φ = 12188500896.

The previous prime is 12189602657. The next prime is 12189602699. The reversal of 12189602669 is 96620698121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96620698121 = 5791 ⋅16684631.

It can be written as a sum of positive squares in 2 ways, for example, as 5440980169 + 6748622500 = 73763^2 + 82150^2 .

It is a cyclic number.

It is not a de Polignac number, because 12189602669 - 2¹⁶ = 12189537133 is a prime.

It is a super-2 number, since 2×12189602669² (a number of 21 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 (12189602699) 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, 534122 + ... + 556475.

It is an arithmetic number, because the mean of its divisors is an integer number (3047676111).

Almost surely, 2^12189602669 is an apocalyptic number.

It is an amenable number.

12189602669 is a deficient number, since it is larger than the sum of its proper divisors (1101775).

12189602669 is a wasteful number, since it uses less digits than its factorization.

12189602669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101774.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 12189602669 in words is "twelve billion, one hundred eighty-nine million, six hundred two thousand, six hundred sixty-nine".