849872611971 has 6 divisors (see below), whose sum is σ = 1227593772860. Its totient is φ = 566581741308.

The previous prime is 849872611963. The next prime is 849872612003. The reversal of 849872611971 is 179116278948.

849872611971 is a `hidden beast` number, since 8 + 4 + 9 + 8 + 7 + 2 + 611 + 9 + 7 + 1 = 666.

It is not a de Polignac number, because 849872611971 - 2³ = 849872611963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 849872611899 and 849872611908.

It is not an unprimeable number, because it can be changed into a prime (849872611901) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 47215145101 + ... + 47215145118.

Almost surely, 2^849872611971 is an apocalyptic number.

849872611971 is a deficient number, since it is larger than the sum of its proper divisors (377721160889).

849872611971 is a wasteful number, since it uses less digits than its factorization.

849872611971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94430290225 (or 94430290222 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 63.

The spelling of 849872611971 in words is "eight hundred forty-nine billion, eight hundred seventy-two million, six hundred eleven thousand, nine hundred seventy-one".