173803921344 has 140 divisors (see below), whose sum is σ = 515488842528. Its totient is φ = 57903206400.

The previous prime is 173803921303. The next prime is 173803921349. The reversal of 173803921344 is 443129308371.

173803921344 is a `hidden beast` number, since 17 + 380 + 3 + 9 + 213 + 44 = 666.

173803921344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 173803921344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173803921349) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 10779849 + ... + 10795959.

Almost surely, 2^173803921344 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 173803921344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257744421264).

173803921344 is an abundant number, since it is smaller than the sum of its proper divisors (341684921184).

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

173803921344 is a wasteful number, since it uses less digits than its factorization.

173803921344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18216 (or 18197 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 173803921344 in words is "one hundred seventy-three billion, eight hundred three million, nine hundred twenty-one thousand, three hundred forty-four".