871065824256166 has 96 divisors (see below), whose sum is σ = 1655714990103552. Its totient is φ = 333866167856640.

The previous prime is 871065824256139. The next prime is 871065824256169. The reversal of 871065824256166 is 661652428560178.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871065824256169) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 415560451 + ... + 417651313.

It is an arithmetic number, because the mean of its divisors is an integer number (17247031146912).

Almost surely, 2^{871065824256166} is an apocalyptic number.

871065824256166 is a deficient number, since it is larger than the sum of its proper divisors (784649165847386).

871065824256166 is a wasteful number, since it uses less digits than its factorization.

871065824256166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091314 (or 2091147 counting only the distinct ones).

The product of its (nonzero) digits is 232243200, while the sum is 67.

The spelling of 871065824256166 in words is "eight hundred seventy-one trillion, sixty-five billion, eight hundred twenty-four million, two hundred fifty-six thousand, one hundred sixty-six".