86649134571 has 12 divisors (see below), whose sum is σ = 130601594448. Its totient is φ = 55254520464.

The previous prime is 86649134569. The next prime is 86649134609. The reversal of 86649134571 is 17543194668.

86649134571 is a `hidden beast` number, since 8 + 6 + 64 + 9 + 1 + 3 + 4 + 571 = 666.

It is not a de Polignac number, because 86649134571 - 2¹ = 86649134569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86649134071) 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, 209297220 + ... + 209297633.

It is an arithmetic number, because the mean of its divisors is an integer number (10883466204).

Almost surely, 2^86649134571 is an apocalyptic number.

86649134571 is a deficient number, since it is larger than the sum of its proper divisors (43952459877).

86649134571 is a wasteful number, since it uses less digits than its factorization.

86649134571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418594882 (or 418594879 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 86649134571 in words is "eighty-six billion, six hundred forty-nine million, one hundred thirty-four thousand, five hundred seventy-one".