172798272000 has 960 divisors, whose sum is σ = 663620525568. Its totient is φ = 44789760000.

The previous prime is 172798271983. The next prime is 172798272067. The reversal of 172798272000 is 272897271.

It is a tau number, because it is divible by the number of its divisors (960).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 637631865 + ... + 637632135.

Almost surely, 2^172798272000 is an apocalyptic number.

172798272000 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 172798272000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331810262784).

172798272000 is an abundant number, since it is smaller than the sum of its proper divisors (490822253568).

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

172798272000 is an frugal number, since it uses more digits than its factorization.

172798272000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The spelling of 172798272000 in words is "one hundred seventy-two billion, seven hundred ninety-eight million, two hundred seventy-two thousand".