855000084817 has 4 divisors (see below), whose sum is σ = 866712414820. Its totient is φ = 843287754816.

The previous prime is 855000084811. The next prime is 855000084823. The reversal of 855000084817 is 718480000558.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (855000084811) and next prime (855000084823).

It can be written as a sum of positive squares in 2 ways, for example, as 539048171601 + 315951913216 = 734199^2 + 562096^2 .

It is a cyclic number.

It is not a de Polignac number, because 855000084817 - 2¹⁹ = 854999560529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855000084811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5856164892 + ... + 5856165037.

It is an arithmetic number, because the mean of its divisors is an integer number (216678103705).

Almost surely, 2^855000084817 is an apocalyptic number.

It is an amenable number.

855000084817 is a deficient number, since it is larger than the sum of its proper divisors (11712330003).

855000084817 is a wasteful number, since it uses less digits than its factorization.

855000084817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11712330002.

The product of its (nonzero) digits is 358400, while the sum is 46.

The spelling of 855000084817 in words is "eight hundred fifty-five billion, eighty-four thousand, eight hundred seventeen".