12799999171 has 2 divisors, whose sum is σ = 12799999172. Its totient is φ = 12799999170.

The previous prime is 12799999153. The next prime is 12799999181. The reversal of 12799999171 is 17199999721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12799999171 - 2¹³ = 12799990979 is a prime.

It is not a weakly prime, because it can be changed into another prime (12799999181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6399999585 + 6399999586.

It is an arithmetic number, because the mean of its divisors is an integer number (6399999586).

Almost surely, 2^12799999171 is an apocalyptic number.

12799999171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12799999171 is an equidigital number, since it uses as much as digits as its factorization.

12799999171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5786802, while the sum is 64.

The spelling of 12799999171 in words is "twelve billion, seven hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred seventy-one".