128326221360 has 120 divisors (see below), whose sum is σ = 434990172240. Its totient is φ = 33900489216.

The previous prime is 128326221349. The next prime is 128326221377. The reversal of 128326221360 is 63122623821.

128326221360 is a `hidden beast` number, since 1 + 28 + 3 + 2 + 622 + 1 + 3 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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 23 ways as a sum of consecutive naturals, for example, 755815 + ... + 909894.

It is an arithmetic number, because the mean of its divisors is an integer number (3624918102).

Almost surely, 2^128326221360 is an apocalyptic number.

128326221360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128326221360 is an abundant number, since it is smaller than the sum of its proper divisors (306663950880).

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

128326221360 is a wasteful number, since it uses less digits than its factorization.

128326221360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665835 (or 1665826 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 128326221360 in words is "one hundred twenty-eight billion, three hundred twenty-six million, two hundred twenty-one thousand, three hundred sixty".