128857878000 has 400 divisors, whose sum is σ = 467446019040. Its totient is φ = 34214400000.

The previous prime is 128857877947. The next prime is 128857878011. The reversal of 128857878000 is 878758821.

128857878000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 40660416 + ... + 40663584.

Almost surely, 2^128857878000 is an apocalyptic number.

128857878000 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 128857878000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233723009520).

128857878000 is an abundant number, since it is smaller than the sum of its proper divisors (338588141040).

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

128857878000 is a wasteful number, since it uses less digits than its factorization.

128857878000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3455 (or 3430 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 54.

The spelling of 128857878000 in words is "one hundred twenty-eight billion, eight hundred fifty-seven million, eight hundred seventy-eight thousand".