865435534568 has 16 divisors (see below), whose sum is σ = 1770209048160. Its totient is φ = 393379788400.

The previous prime is 865435534549. The next prime is 865435534573.

865435534568 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 865435534568.

It is an unprimeable number.

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, 4917247268 + ... + 4917247443.

It is an arithmetic number, because the mean of its divisors is an integer number (110638065510).

Almost surely, 2^865435534568 is an apocalyptic number.

865435534568 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

865435534568 is an abundant number, since it is smaller than the sum of its proper divisors (904773513592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865435534568 is a wasteful number, since it uses less digits than its factorization.

865435534568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9834494728 (or 9834494724 counting only the distinct ones).

The product of its digits is 207360000, while the sum is 62.

The spelling of 865435534568 in words is "eight hundred sixty-five billion, four hundred thirty-five million, five hundred thirty-four thousand, five hundred sixty-eight".