128326519968 has 48 divisors (see below), whose sum is σ = 338138006976. Its totient is φ = 42612853760.

The previous prime is 128326519943. The next prime is 128326519969. The reversal of 128326519968 is 869915623821.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (128326519969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2516073 + ... + 2566568.

It is an arithmetic number, because the mean of its divisors is an integer number (7044541812).

Almost surely, 2^128326519968 is an apocalyptic number.

It is an amenable number.

128326519968 is an abundant number, since it is smaller than the sum of its proper divisors (209811487008).

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

128326519968 is a wasteful number, since it uses less digits than its factorization.

128326519968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082917 (or 5082909 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 60.

The spelling of 128326519968 in words is "one hundred twenty-eight billion, three hundred twenty-six million, five hundred nineteen thousand, nine hundred sixty-eight".