128554321872384 has 120 divisors (see below), whose sum is σ = 371057116166880. Its totient is φ = 42846746923008.

The previous prime is 128554321872349. The next prime is 128554321872409. The reversal of 128554321872384 is 483278123455821.

128554321872384 is a `hidden beast` number, since 1 + 2 + 8 + 5 + 543 + 2 + 1 + 8 + 7 + 2 + 3 + 84 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40672137 + ... + 43718775.

It is an arithmetic number, because the mean of its divisors is an integer number (3092142634724).

Almost surely, 2^{128554321872384} 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 128554321872384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185528558083440).

128554321872384 is an abundant number, since it is smaller than the sum of its proper divisors (242502794294496).

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

128554321872384 is an equidigital number, since it uses as much as digits as its factorization.

128554321872384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055820 (or 3055801 counting only the distinct ones).

The product of its digits is 103219200, while the sum is 63.

The spelling of 128554321872384 in words is "one hundred twenty-eight trillion, five hundred fifty-four billion, three hundred twenty-one million, eight hundred seventy-two thousand, three hundred eighty-four".