12871138171 has 2 divisors, whose sum is σ = 12871138172. Its totient is φ = 12871138170.

The previous prime is 12871138109. The next prime is 12871138187. The reversal of 12871138171 is 17183117821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12871138171 - 2¹³ = 12871129979 is a prime.

It is not a weakly prime, because it can be changed into another prime (12871138471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6435569085 + 6435569086.

It is an arithmetic number, because the mean of its divisors is an integer number (6435569086).

Almost surely, 2^12871138171 is an apocalyptic number.

12871138171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12871138171 is an equidigital number, since it uses as much as digits as its factorization.

12871138171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 40.

The spelling of 12871138171 in words is "twelve billion, eight hundred seventy-one million, one hundred thirty-eight thousand, one hundred seventy-one".