86522844681 has 32 divisors (see below), whose sum is σ = 157762456320. Its totient is φ = 45638422272.

The previous prime is 86522844671. The next prime is 86522844721. The reversal of 86522844681 is 18644822568.

86522844681 is a `hidden beast` number, since 86 + 5 + 22 + 84 + 468 + 1 = 666.

It is not a de Polignac number, because 86522844681 - 2⁹ = 86522844169 is a prime.

It is a super-2 number, since 2×86522844681² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86522844671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17604960 + ... + 17609873.

It is an arithmetic number, because the mean of its divisors is an integer number (4930076760).

Almost surely, 2^86522844681 is an apocalyptic number.

It is an amenable number.

86522844681 is a deficient number, since it is larger than the sum of its proper divisors (71239611639).

86522844681 is a wasteful number, since it uses less digits than its factorization.

86522844681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35214862 (or 35214856 counting only the distinct ones).

The product of its digits is 5898240, while the sum is 54.

It can be divided in two parts, 865228 and 44681, that added together give a palindrome (909909).

The spelling of 86522844681 in words is "eighty-six billion, five hundred twenty-two million, eight hundred forty-four thousand, six hundred eighty-one".