128555064000 has 672 divisors, whose sum is σ = 528134031360. Its totient is φ = 29521152000.

The previous prime is 128555063953. The next prime is 128555064017. The reversal of 128555064000 is 460555821.

128555064000 is a `hidden beast` number, since 1 + 2 + 8 + 5 + 5 + 5 + 0 + 640 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 15043729 + ... + 15052271.

Almost surely, 2^128555064000 is an apocalyptic number.

128555064000 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 128555064000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264067015680).

128555064000 is an abundant number, since it is smaller than the sum of its proper divisors (399578967360).

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

128555064000 is a wasteful number, since it uses less digits than its factorization.

128555064000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8606 (or 8583 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 128555064000 in words is "one hundred twenty-eight billion, five hundred fifty-five million, sixty-four thousand".