163609897050 has 144 divisors (see below), whose sum is σ = 445250520000. Its totient is φ = 43066679040.

The previous prime is 163609897027. The next prime is 163609897067. The reversal of 163609897050 is 50798906361.

163609897050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 71 ways as a sum of consecutive naturals, for example, 26389851 + ... + 26396049.

It is an arithmetic number, because the mean of its divisors is an integer number (3092017500).

Almost surely, 2^163609897050 is an apocalyptic number.

163609897050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 163609897050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222625260000).

163609897050 is an abundant number, since it is smaller than the sum of its proper divisors (281640622950).

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

163609897050 is a wasteful number, since it uses less digits than its factorization.

163609897050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6965 (or 6957 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 163609897050 in words is "one hundred sixty-three billion, six hundred nine million, eight hundred ninety-seven thousand, fifty".