863327312865 has 12 divisors (see below), whose sum is σ = 1496434009044. Its totient is φ = 460441233504.

The previous prime is 863327312863. The next prime is 863327312893. The reversal of 863327312865 is 568213723368.

It is a happy number.

863327312865 is a `hidden beast` number, since 8 + 6 + 3 + 327 + 31 + 286 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 146859867729 + 716467445136 = 383223^2 + 846444^2 .

It is not a de Polignac number, because 863327312865 - 2¹ = 863327312863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (863327312863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9592525654 + ... + 9592525743.

It is an arithmetic number, because the mean of its divisors is an integer number (124702834087).

Almost surely, 2^863327312865 is an apocalyptic number.

It is an amenable number.

863327312865 is a deficient number, since it is larger than the sum of its proper divisors (633106696179).

863327312865 is a wasteful number, since it uses less digits than its factorization.

863327312865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19185051408 (or 19185051405 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 863327312865 in words is "eight hundred sixty-three billion, three hundred twenty-seven million, three hundred twelve thousand, eight hundred sixty-five".