13971166771 has 2 divisors, whose sum is σ = 13971166772. Its totient is φ = 13971166770.

The previous prime is 13971166751. The next prime is 13971166777. The reversal of 13971166771 is 17766117931.

It is a happy number.

13971166771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13971166771 - 2⁹ = 13971166259 is a prime.

It is not a weakly prime, because it can be changed into another prime (13971166777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6985583385 + 6985583386.

It is an arithmetic number, because the mean of its divisors is an integer number (6985583386).

Almost surely, 2^13971166771 is an apocalyptic number.

13971166771 is a deficient number, since it is larger than the sum of its proper divisors (1).

13971166771 is an equidigital number, since it uses as much as digits as its factorization.

13971166771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 333396, while the sum is 49.

The spelling of 13971166771 in words is "thirteen billion, nine hundred seventy-one million, one hundred sixty-six thousand, seven hundred seventy-one".