128333533830 has 64 divisors (see below), whose sum is σ = 321544555200. Its totient is φ = 32739033600.

The previous prime is 128333533829. The next prime is 128333533879. The reversal of 128333533830 is 38335333821.

128333533830 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 581821 + ... + 771480.

It is an arithmetic number, because the mean of its divisors is an integer number (5024133675).

Almost surely, 2^128333533830 is an apocalyptic number.

128333533830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128333533830 is an abundant number, since it is smaller than the sum of its proper divisors (193211021370).

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

128333533830 is a wasteful number, since it uses less digits than its factorization.

128333533830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353449.

The product of its (nonzero) digits is 466560, while the sum is 42.

Subtracting from 128333533830 its reverse (38335333821), we obtain a square (89998200009 = 299997²).

The spelling of 128333533830 in words is "one hundred twenty-eight billion, three hundred thirty-three million, five hundred thirty-three thousand, eight hundred thirty".