173997720000 has 1400 divisors, whose sum is σ = 737956040976. Its totient is φ = 40310784000.

The previous prime is 173997719999. The next prime is 173997720031. The reversal of 173997720000 is 27799371.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 10235159992 + ... + 10235160008.

Almost surely, 2^173997720000 is an apocalyptic number.

173997720000 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 173997720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368978020488).

173997720000 is an abundant number, since it is smaller than the sum of its proper divisors (563958320976).

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

173997720000 is an frugal number, since it uses more digits than its factorization.

173997720000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The spelling of 173997720000 in words is "one hundred seventy-three billion, nine hundred ninety-seven million, seven hundred twenty thousand".