8661231171 has 12 divisors (see below), whose sum is σ = 12639644472. Its totient is φ = 5714626176.

The previous prime is 8661231157. The next prime is 8661231191. The reversal of 8661231171 is 1711321668.

8661231171 is a `hidden beast` number, since 8 + 6 + 612 + 31 + 1 + 7 + 1 = 666.

It is not a de Polignac number, because 8661231171 - 2¹¹ = 8661229123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8661231151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4959741 + ... + 4961486.

It is an arithmetic number, because the mean of its divisors is an integer number (1053303706).

Almost surely, 2^8661231171 is an apocalyptic number.

8661231171 is a deficient number, since it is larger than the sum of its proper divisors (3978413301).

8661231171 is a wasteful number, since it uses less digits than its factorization.

8661231171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9921330 (or 9921327 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 8661231171 is about 93065.7357516718. The cubic root of 8661231171 is about 2053.6505385522.

The spelling of 8661231171 in words is "eight billion, six hundred sixty-one million, two hundred thirty-one thousand, one hundred seventy-one".