328544944128 has 576 divisors, whose sum is σ = 1063000350720. Its totient is φ = 99883155456.

The previous prime is 328544944099. The next prime is 328544944177. The reversal of 328544944128 is 821449445823.

328544944128 is a `hidden beast` number, since 3 + 2 + 8 + 544 + 94 + 4 + 1 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (8847360) is a multiple of the sum of its prime divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2586968001 + ... + 2586968127.

It is an arithmetic number, because the mean of its divisors is an integer number (1845486720).

Almost surely, 2^328544944128 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 328544944128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531500175360).

328544944128 is an abundant number, since it is smaller than the sum of its proper divisors (734455406592).

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

328544944128 is an equidigital number, since it uses as much as digits as its factorization.

328544944128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 192 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 54.

The spelling of 328544944128 in words is "three hundred twenty-eight billion, five hundred forty-four million, nine hundred forty-four thousand, one hundred twenty-eight".