128632857288 has 384 divisors, whose sum is σ = 380259532800. Its totient is φ = 36020146176.

The previous prime is 128632857281. The next prime is 128632857293. The reversal of 128632857288 is 882758236821.

Its product of digits (20643840) is a multiple of the sum of its prime divisors (448).

It is not an unprimeable number, because it can be changed into a prime (128632857281) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 538212673 + ... + 538212911.

It is an arithmetic number, because the mean of its divisors is an integer number (990259200).

Almost surely, 2^128632857288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128632857288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190129766400).

128632857288 is an abundant number, since it is smaller than the sum of its proper divisors (251626675512).

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

128632857288 is a wasteful number, since it uses less digits than its factorization.

128632857288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 448 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 60.

The spelling of 128632857288 in words is "one hundred twenty-eight billion, six hundred thirty-two million, eight hundred fifty-seven thousand, two hundred eighty-eight".