85186286771 has 4 divisors (see below), whose sum is σ = 86630122200. Its totient is φ = 83742451344.

The previous prime is 85186286761. The next prime is 85186286821. The reversal of 85186286771 is 17768268158.

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

It is a cyclic number.

It is not a de Polignac number, because 85186286771 - 2¹⁰ = 85186285747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59), and also a Moran number because the ratio is a prime number: 1443835369 = 85186286771 / (8 + 5 + 1 + 8 + 6 + 2 + 8 + 6 + 7 + 7 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85186286771.

It is not an unprimeable number, because it can be changed into a prime (85186286711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721917626 + ... + 721917743.

It is an arithmetic number, because the mean of its divisors is an integer number (21657530550).

Almost surely, 2^85186286771 is an apocalyptic number.

85186286771 is a deficient number, since it is larger than the sum of its proper divisors (1443835429).

85186286771 is a wasteful number, since it uses less digits than its factorization.

85186286771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443835428.

The product of its digits is 9031680, while the sum is 59.

The spelling of 85186286771 in words is "eighty-five billion, one hundred eighty-six million, two hundred eighty-six thousand, seven hundred seventy-one".