86491668231 has 6 divisors (see below), whose sum is σ = 124932409680. Its totient is φ = 57661112148.

The previous prime is 86491668217. The next prime is 86491668259. The reversal of 86491668231 is 13286619468.

It is not a de Polignac number, because 86491668231 - 2¹⁴ = 86491651847 is a prime.

It is a super-2 number, since 2×86491668231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86491668331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4805092671 + ... + 4805092688.

It is an arithmetic number, because the mean of its divisors is an integer number (20822068280).

Almost surely, 2^86491668231 is an apocalyptic number.

86491668231 is a deficient number, since it is larger than the sum of its proper divisors (38440741449).

86491668231 is a wasteful number, since it uses less digits than its factorization.

86491668231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9610185365 (or 9610185362 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The spelling of 86491668231 in words is "eighty-six billion, four hundred ninety-one million, six hundred sixty-eight thousand, two hundred thirty-one".