128323072000 has 416 divisors, whose sum is σ = 354389053824. Its totient is φ = 46137344000.

The previous prime is 128323071917. The next prime is 128323072039. The reversal of 128323072000 is 270323821.

It is a self number, because there is not a number n which added to its sum of digits gives 128323072000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200191680 + ... + 200192320.

It is an arithmetic number, because the mean of its divisors is an integer number (851896764).

Almost surely, 2^128323072000 is an apocalyptic number.

128323072000 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 128323072000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177194526912).

128323072000 is an abundant number, since it is smaller than the sum of its proper divisors (226065981824).

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

128323072000 is an equidigital number, since it uses as much as digits as its factorization.

128323072000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 128323072000 its reverse (270323821), we get a palindrome (128593395821).

The spelling of 128323072000 in words is "one hundred twenty-eight billion, three hundred twenty-three million, seventy-two thousand".