172450780320 has 576 divisors, whose sum is σ = 686030155776. Its totient is φ = 36090593280.

The previous prime is 172450780319. The next prime is 172450780343. The reversal of 172450780320 is 23087054271.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38829300 + ... + 38833740.

It is an arithmetic number, because the mean of its divisors is an integer number (1191024576).

Almost surely, 2^172450780320 is an apocalyptic number.

172450780320 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 172450780320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343015077888).

172450780320 is an abundant number, since it is smaller than the sum of its proper divisors (513579375456).

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

172450780320 is a wasteful number, since it uses less digits than its factorization.

172450780320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613 (or 4598 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The spelling of 172450780320 in words is "one hundred seventy-two billion, four hundred fifty million, seven hundred eighty thousand, three hundred twenty".