871161161178 has 192 divisors, whose sum is σ = 2206736953344. Its totient is φ = 224418902400.

The previous prime is 871161161099. The next prime is 871161161183.

871161161178 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 367422333 + ... + 367424703.

It is an arithmetic number, because the mean of its divisors is an integer number (11493421632).

Almost surely, 2^871161161178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871161161178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1103368476672).

871161161178 is an abundant number, since it is smaller than the sum of its proper divisors (1335575792166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871161161178 is a wasteful number, since it uses less digits than its factorization.

871161161178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969 (or 2958 counting only the distinct ones).

The product of its digits is 112896, while the sum is 48.

The spelling of 871161161178 in words is "eight hundred seventy-one billion, one hundred sixty-one million, one hundred sixty-one thousand, one hundred seventy-eight".