871156085771 has 2 divisors, whose sum is σ = 871156085772. Its totient is φ = 871156085770.

The previous prime is 871156085759. The next prime is 871156085801. The reversal of 871156085771 is 177580651178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 871156085771 - 2¹⁸ = 871155823627 is a prime.

It is not a weakly prime, because it can be changed into another prime (871156085671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435578042885 + 435578042886.

It is an arithmetic number, because the mean of its divisors is an integer number (435578042886).

Almost surely, 2^871156085771 is an apocalyptic number.

871156085771 is a deficient number, since it is larger than the sum of its proper divisors (1).

871156085771 is an equidigital number, since it uses as much as digits as its factorization.

871156085771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3292800, while the sum is 56.

The spelling of 871156085771 in words is "eight hundred seventy-one billion, one hundred fifty-six million, eighty-five thousand, seven hundred seventy-one".