172323139200 has 384 divisors, whose sum is σ = 599466631680. Its totient is φ = 43420692480.

The previous prime is 172323139189. The next prime is 172323139243. The reversal of 172323139200 is 2931323271.

It is a tau number, because it is divible by the number of its divisors (384).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18321699 + ... + 18331101.

It is an arithmetic number, because the mean of its divisors is an integer number (1561111020).

Almost surely, 2^172323139200 is an apocalyptic number.

172323139200 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 172323139200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299733315840).

172323139200 is an abundant number, since it is smaller than the sum of its proper divisors (427143492480).

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

172323139200 is a wasteful number, since it uses less digits than its factorization.

172323139200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9536 (or 9519 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The spelling of 172323139200 in words is "one hundred seventy-two billion, three hundred twenty-three million, one hundred thirty-nine thousand, two hundred".