163443805252 has 72 divisors (see below), whose sum is σ = 354293774016. Its totient is φ = 64599410304.

The previous prime is 163443805229. The next prime is 163443805253. The reversal of 163443805252 is 252508344361.

163443805252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 163443805199 and 163443805208.

It is not an unprimeable number, because it can be changed into a prime (163443805253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5298658 + ... + 5329414.

Almost surely, 2^163443805252 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 163443805252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177146887008).

163443805252 is an abundant number, since it is smaller than the sum of its proper divisors (190849968764).

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

163443805252 is a wasteful number, since it uses less digits than its factorization.

163443805252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31917 (or 31902 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 163443805252 in words is "one hundred sixty-three billion, four hundred forty-three million, eight hundred five thousand, two hundred fifty-two".