128873892800 has 84 divisors (see below), whose sum is σ = 318508181880. Its totient is φ = 51322321920.

The previous prime is 128873892781. The next prime is 128873892827. The reversal of 128873892800 is 8298378821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185786 + ... + 540614.

It is an arithmetic number, because the mean of its divisors is an integer number (3791764070).

Almost surely, 2^128873892800 is an apocalyptic number.

128873892800 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 128873892800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159254090940).

128873892800 is an abundant number, since it is smaller than the sum of its proper divisors (189634289080).

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

128873892800 is a wasteful number, since it uses less digits than its factorization.

128873892800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355078 (or 355063 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 56.

The spelling of 128873892800 in words is "one hundred twenty-eight billion, eight hundred seventy-three million, eight hundred ninety-two thousand, eight hundred".