871194071752205 has 4 divisors (see below), whose sum is σ = 1045432886102652. Its totient is φ = 696955257401760.

The previous prime is 871194071752153. The next prime is 871194071752229. The reversal of 871194071752205 is 502257170491178.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162735078778756 + 708458992973449 = 12756766^2 + 26616893^2 .

It is not a de Polignac number, because 871194071752205 - 2¹⁰ = 871194071751181 is a prime.

It is a super-2 number, since 2×871194071752205² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87119407175216 + ... + 87119407175225.

It is an arithmetic number, because the mean of its divisors is an integer number (261358221525663).

Almost surely, 2^{871194071752205} is an apocalyptic number.

It is an amenable number.

871194071752205 is a deficient number, since it is larger than the sum of its proper divisors (174238814350447).

871194071752205 is a wasteful number, since it uses less digits than its factorization.

871194071752205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174238814350446.

The product of its (nonzero) digits is 9878400, while the sum is 59.

The spelling of 871194071752205 in words is "eight hundred seventy-one trillion, one hundred ninety-four billion, seventy-one million, seven hundred fifty-two thousand, two hundred five".