12169343447 has 12 divisors (see below), whose sum is σ = 12974427696. Its totient is φ = 11392529280.

The previous prime is 12169343443. The next prime is 12169343479. The reversal of 12169343447 is 74434396121.

It is not a de Polignac number, because 12169343447 - 2² = 12169343443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12169343398 and 12169343407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12169343443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68954 + ... + 170567.

It is an arithmetic number, because the mean of its divisors is an integer number (1081202308).

Almost surely, 2^12169343447 is an apocalyptic number.

12169343447 is a deficient number, since it is larger than the sum of its proper divisors (805084249).

12169343447 is an equidigital number, since it uses as much as digits as its factorization.

12169343447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239638 (or 239591 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The spelling of 12169343447 in words is "twelve billion, one hundred sixty-nine million, three hundred forty-three thousand, four hundred forty-seven".