618344443816 has 64 divisors (see below), whose sum is σ = 1280984544000. Its totient is φ = 277484064000.

The previous prime is 618344443789. The next prime is 618344443831.

618344443816 is nontrivially palindromic in base 10.

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 15 ways as a sum of consecutive naturals, for example, 3002241 + ... + 3201583.

It is an arithmetic number, because the mean of its divisors is an integer number (20015383500).

Almost surely, 2^618344443816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618344443816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640492272000).

618344443816 is an abundant number, since it is smaller than the sum of its proper divisors (662640100184).

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

618344443816 is a wasteful number, since it uses less digits than its factorization.

618344443816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199810 (or 199806 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 52.

The spelling of 618344443816 in words is "six hundred eighteen billion, three hundred forty-four million, four hundred forty-three thousand, eight hundred sixteen".