128483779648 has 336 divisors, whose sum is σ = 320554502400. Its totient is φ = 50791587840.

The previous prime is 128483779639. The next prime is 128483779649. The reversal of 128483779648 is 846977384821.

It is not an unprimeable number, because it can be changed into a prime (128483779649) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 474109753 + ... + 474110023.

Almost surely, 2^128483779648 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 128483779648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160277251200).

128483779648 is an abundant number, since it is smaller than the sum of its proper divisors (192070722752).

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

128483779648 is a wasteful number, since it uses less digits than its factorization.

128483779648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 481 counting only the distinct ones).

The product of its digits is 130056192, while the sum is 67.

The spelling of 128483779648 in words is "one hundred twenty-eight billion, four hundred eighty-three million, seven hundred seventy-nine thousand, six hundred forty-eight".