871668430456871 has 2 divisors, whose sum is σ = 871668430456872. Its totient is φ = 871668430456870.

The previous prime is 871668430456829. The next prime is 871668430456927. The reversal of 871668430456871 is 178654034866178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 871668430456871 - 2⁶ = 871668430456807 is a prime.

It is a super-2 number, since 2×871668430456871² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (877668430456871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435834215228435 + 435834215228436.

It is an arithmetic number, because the mean of its divisors is an integer number (435834215228436).

Almost surely, 2^{871668430456871} is an apocalyptic number.

871668430456871 is a deficient number, since it is larger than the sum of its proper divisors (1).

871668430456871 is an equidigital number, since it uses as much as digits as its factorization.

871668430456871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1300561920, while the sum is 74.

The spelling of 871668430456871 in words is "eight hundred seventy-one trillion, six hundred sixty-eight billion, four hundred thirty million, four hundred fifty-six thousand, eight hundred seventy-one".