865322223568 has 80 divisors (see below), whose sum is σ = 1848733673472. Its totient is φ = 389086400000.

The previous prime is 865322223427. The next prime is 865322223593.

865322223568 is nontrivially palindromic in base 10.

865322223568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20439030 + ... + 20481322.

Almost surely, 2^865322223568 is an apocalyptic number.

865322223568 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 865322223568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924366836736).

865322223568 is an abundant number, since it is smaller than the sum of its proper divisors (983411449904).

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

865322223568 is a wasteful number, since it uses less digits than its factorization.

865322223568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43564 (or 43558 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 52.

The spelling of 865322223568 in words is "eight hundred sixty-five billion, three hundred twenty-two million, two hundred twenty-three thousand, five hundred sixty-eight".