861832179163 has 24 divisors (see below), whose sum is σ = 989741106800. Its totient is φ = 747675836928.

The previous prime is 861832179139. The next prime is 861832179179. The reversal of 861832179163 is 361971238168.

It is a de Polignac number, because none of the positive numbers 2^k-861832179163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (861832179133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1917828 + ... + 2324161.

Almost surely, 2^861832179163 is an apocalyptic number.

861832179163 is a deficient number, since it is larger than the sum of its proper divisors (127908927637).

861832179163 is a wasteful number, since it uses less digits than its factorization.

861832179163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4242079 (or 4242062 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The spelling of 861832179163 in words is "eight hundred sixty-one billion, eight hundred thirty-two million, one hundred seventy-nine thousand, one hundred sixty-three".