86857334185 has 8 divisors (see below), whose sum is σ = 105696812736. Its totient is φ = 68507192880.

The previous prime is 86857334177. The next prime is 86857334197. The reversal of 86857334185 is 58143375868.

It is a happy number.

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

It is not a de Polignac number, because 86857334185 - 2³ = 86857334177 is a prime.

It is a super-2 number, since 2×86857334185² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122333919 + ... + 122334628.

It is an arithmetic number, because the mean of its divisors is an integer number (13212101592).

Almost surely, 2^86857334185 is an apocalyptic number.

It is an amenable number.

86857334185 is a deficient number, since it is larger than the sum of its proper divisors (18839478551).

86857334185 is a wasteful number, since it uses less digits than its factorization.

86857334185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244668623.

The product of its digits is 19353600, while the sum is 58.

The spelling of 86857334185 in words is "eighty-six billion, eight hundred fifty-seven million, three hundred thirty-four thousand, one hundred eighty-five".