163305211616 has 144 divisors (see below), whose sum is σ = 348064464384. Its totient is φ = 75356531712.

The previous prime is 163305211607. The next prime is 163305211621. The reversal of 163305211616 is 616112503361.

163305211616 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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79543646 + ... + 79545698.

It is an arithmetic number, because the mean of its divisors is an integer number (2417114336).

Almost surely, 2^163305211616 is an apocalyptic number.

163305211616 is a gapful number since it is divisible by the number (16) 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 163305211616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174032232192).

163305211616 is an abundant number, since it is smaller than the sum of its proper divisors (184759252768).

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

163305211616 is a wasteful number, since it uses less digits than its factorization.

163305211616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273 (or 2242 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

Adding to 163305211616 its reverse (616112503361), we get a palindrome (779417714977).

The spelling of 163305211616 in words is "one hundred sixty-three billion, three hundred five million, two hundred eleven thousand, six hundred sixteen".