849186585855 has 24 divisors (see below), whose sum is σ = 1489657439088. Its totient is φ = 447442889856.

The previous prime is 849186585851. The next prime is 849186585893. The reversal of 849186585855 is 558585681948.

It is a happy number.

849186585855 is a `hidden beast` number, since 8 + 491 + 8 + 6 + 5 + 85 + 8 + 55 = 666.

It is not a de Polignac number, because 849186585855 - 2² = 849186585851 is a prime.

It is a super-2 number, since 2×849186585855² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849186585851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113675862 + ... + 113683331.

It is an arithmetic number, because the mean of its divisors is an integer number (62069059962).

Almost surely, 2^849186585855 is an apocalyptic number.

849186585855 is a deficient number, since it is larger than the sum of its proper divisors (640470853233).

849186585855 is a wasteful number, since it uses less digits than its factorization.

849186585855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227359287 (or 227359284 counting only the distinct ones).

The product of its digits is 552960000, while the sum is 72.

The spelling of 849186585855 in words is "eight hundred forty-nine billion, one hundred eighty-six million, five hundred eighty-five thousand, eight hundred fifty-five".