16505535222 has 72 divisors (see below), whose sum is σ = 39341942640. Its totient is φ = 4997440800.

The previous prime is 16505535181. The next prime is 16505535257. The reversal of 16505535222 is 22253550561.

16505535222 is a `hidden beast` number, since 1 + 6 + 50 + 553 + 52 + 2 + 2 = 666.

16505535222 is digitally balanced in base 5, 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 35 ways as a sum of consecutive naturals, for example, 3393072 + ... + 3397932.

It is an arithmetic number, because the mean of its divisors is an integer number (546415870).

Almost surely, 2^16505535222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16505535222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19670971320).

16505535222 is an abundant number, since it is smaller than the sum of its proper divisors (22836407418).

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

16505535222 is a wasteful number, since it uses less digits than its factorization.

16505535222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6450 (or 6436 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 16505535222 in words is "sixteen billion, five hundred five million, five hundred thirty-five thousand, two hundred twenty-two".