86499281821 has 8 divisors (see below), whose sum is σ = 89437146624. Its totient is φ = 83600851680.

The previous prime is 86499281767. The next prime is 86499281879. The reversal of 86499281821 is 12818299468.

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 86499281821 - 2²⁵ = 86465727389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86499281881) 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 7 ways as a sum of consecutive naturals, for example, 9854205 + ... + 9862978.

It is an arithmetic number, because the mean of its divisors is an integer number (11179643328).

Almost surely, 2^86499281821 is an apocalyptic number.

It is an amenable number.

86499281821 is a deficient number, since it is larger than the sum of its proper divisors (2937864803).

86499281821 is a wasteful number, since it uses less digits than its factorization.

86499281821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19717331.

The product of its digits is 3981312, while the sum is 58.

The spelling of 86499281821 in words is "eighty-six billion, four hundred ninety-nine million, two hundred eighty-one thousand, eight hundred twenty-one".