173213873280 has 640 divisors, whose sum is σ = 710828110080. Its totient is φ = 39374512128.

The previous prime is 173213873279. The next prime is 173213873291. The reversal of 173213873280 is 82378312371.

It is a happy number.

173213873280 is a `hidden beast` number, since 17 + 321 + 38 + 7 + 3 + 280 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

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

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 71486149 + ... + 71488571.

It is an arithmetic number, because the mean of its divisors is an integer number (1110668922).

Almost surely, 2^173213873280 is an apocalyptic number.

173213873280 is a gapful number since it is divisible by the number (10) 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 173213873280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355414055040).

173213873280 is an abundant number, since it is smaller than the sum of its proper divisors (537614236800).

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

173213873280 is a wasteful number, since it uses less digits than its factorization.

173213873280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658 (or 2637 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 173213873280 in words is "one hundred seventy-three billion, two hundred thirteen million, eight hundred seventy-three thousand, two hundred eighty".