12128844473 has 2 divisors, whose sum is σ = 12128844474. Its totient is φ = 12128844472.

The previous prime is 12128844419. The next prime is 12128844517. The reversal of 12128844473 is 37444882121.

It is an a-pointer prime, because the next prime (12128844517) can be obtained adding 12128844473 to its sum of digits (44).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11895610489 + 233233984 = 109067^2 + 15272^2 .

It is a cyclic number.

It is not a de Polignac number, because 12128844473 - 2²⁸ = 11860409017 is a prime.

It is not a weakly prime, because it can be changed into another prime (12128844773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6064422236 + 6064422237.

It is an arithmetic number, because the mean of its divisors is an integer number (6064422237).

Almost surely, 2^12128844473 is an apocalyptic number.

It is an amenable number.

12128844473 is a deficient number, since it is larger than the sum of its proper divisors (1).

12128844473 is an equidigital number, since it uses as much as digits as its factorization.

12128844473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 344064, while the sum is 44.

The spelling of 12128844473 in words is "twelve billion, one hundred twenty-eight million, eight hundred forty-four thousand, four hundred seventy-three".