128326185300 has 72 divisors (see below), whose sum is σ = 371807452800. Its totient is φ = 34172664320.

The previous prime is 128326185241. The next prime is 128326185311. The reversal of 128326185300 is 3581623821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81765 + ... + 513164.

It is an arithmetic number, because the mean of its divisors is an integer number (5163992400).

Almost surely, 2^128326185300 is an apocalyptic number.

128326185300 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 128326185300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185903726400).

128326185300 is an abundant number, since it is smaller than the sum of its proper divisors (243481267500).

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

128326185300 is a wasteful number, since it uses less digits than its factorization.

128326185300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595665 (or 595658 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 128326185300 in words is "one hundred twenty-eight billion, three hundred twenty-six million, one hundred eighty-five thousand, three hundred".