8711871869 has 2 divisors, whose sum is σ = 8711871870. Its totient is φ = 8711871868.

The previous prime is 8711871821. The next prime is 8711871871. The reversal of 8711871869 is 9681781178.

8711871869 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 can be written as a sum of positive squares in only one way, i.e., 8324372644 + 387499225 = 91238^2 + 19685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8711871869 is a prime.

It is a super-2 number, since 2×8711871869² (a number of 21 digits) contains 22 as substring.

Together with 8711871871, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8711871169) 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, 4355935934 + 4355935935.

It is an arithmetic number, because the mean of its divisors is an integer number (4355935935).

Almost surely, 2^8711871869 is an apocalyptic number.

It is an amenable number.

8711871869 is a deficient number, since it is larger than the sum of its proper divisors (1).

8711871869 is an equidigital number, since it uses as much as digits as its factorization.

8711871869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 56.

The square root of 8711871869 is about 93337.4087330477. The cubic root of 8711871869 is about 2057.6452079741.

The spelling of 8711871869 in words is "eight billion, seven hundred eleven million, eight hundred seventy-one thousand, eight hundred sixty-nine".