12405143171 has 2 divisors, whose sum is σ = 12405143172. Its totient is φ = 12405143170.

The previous prime is 12405143167. The next prime is 12405143203. The reversal of 12405143171 is 17134150421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12405143171 - 2² = 12405143167 is a prime.

It is not a weakly prime, because it can be changed into another prime (12405143141) 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 as a sum of consecutive naturals, namely, 6202571585 + 6202571586.

It is an arithmetic number, because the mean of its divisors is an integer number (6202571586).

Almost surely, 2^12405143171 is an apocalyptic number.

12405143171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12405143171 is an equidigital number, since it uses as much as digits as its factorization.

12405143171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

Adding to 12405143171 its reverse (17134150421), we get a palindrome (29539293592).

The spelling of 12405143171 in words is "twelve billion, four hundred five million, one hundred forty-three thousand, one hundred seventy-one".