86441840681 has 8 divisors (see below), whose sum is σ = 98798825280. Its totient is φ = 74086893648.

The previous prime is 86441840651. The next prime is 86441840711. The reversal of 86441840681 is 18604814468.

It is an interprime number because it is at equal distance from previous prime (86441840651) and next prime (86441840711).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86441840681 - 2³⁰ = 85368098857 is a prime.

It is a super-2 number, since 2×86441840681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86441840651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417371 + ... + 589136.

It is an arithmetic number, because the mean of its divisors is an integer number (12349853160).

Almost surely, 2^86441840681 is an apocalyptic number.

It is an amenable number.

86441840681 is a deficient number, since it is larger than the sum of its proper divisors (12356984599).

86441840681 is a wasteful number, since it uses less digits than its factorization.

86441840681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018783.

The product of its (nonzero) digits is 1179648, while the sum is 50.

The spelling of 86441840681 in words is "eighty-six billion, four hundred forty-one million, eight hundred forty thousand, six hundred eighty-one".