12143544534161 has 2 divisors, whose sum is σ = 12143544534162. Its totient is φ = 12143544534160.

The previous prime is 12143544534089. The next prime is 12143544534193. The reversal of 12143544534161 is 16143544534121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7799904994561 + 4343639539600 = 2792831^2 + 2084140^2 .

It is a cyclic number.

It is not a de Polignac number, because 12143544534161 - 2²⁶ = 12143477425297 is a prime.

It is not a weakly prime, because it can be changed into another prime (12143544524161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6071772267080 + 6071772267081.

It is an arithmetic number, because the mean of its divisors is an integer number (6071772267081).

Almost surely, 2^{12143544534161} is an apocalyptic number.

It is an amenable number.

12143544534161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12143544534161 is an equidigital number, since it uses as much as digits as its factorization.

12143544534161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 44.

The spelling of 12143544534161 in words is "twelve trillion, one hundred forty-three billion, five hundred forty-four million, five hundred thirty-four thousand, one hundred sixty-one".