12688981171 has 2 divisors, whose sum is σ = 12688981172. Its totient is φ = 12688981170.

The previous prime is 12688981133. The next prime is 12688981189. The reversal of 12688981171 is 17118988621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12688981171 - 2⁷ = 12688981043 is a prime.

It is a super-2 number, since 2×12688981171² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12688981121) 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, 6344490585 + 6344490586.

It is an arithmetic number, because the mean of its divisors is an integer number (6344490586).

Almost surely, 2^12688981171 is an apocalyptic number.

12688981171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12688981171 is an equidigital number, since it uses as much as digits as its factorization.

12688981171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 52.

The spelling of 12688981171 in words is "twelve billion, six hundred eighty-eight million, nine hundred eighty-one thousand, one hundred seventy-one".