128914805968 has 40 divisors (see below), whose sum is σ = 277662672896. Its totient is φ = 57579811200.

The previous prime is 128914805963. The next prime is 128914805969. The reversal of 128914805968 is 869508419821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128914805963) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9990048 + ... + 10002943.

Almost surely, 2^128914805968 is an apocalyptic number.

It is an amenable number.

128914805968 is an abundant number, since it is smaller than the sum of its proper divisors (148747866928).

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

128914805968 is a wasteful number, since it uses less digits than its factorization.

128914805968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19993043 (or 19993037 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 61.

The spelling of 128914805968 in words is "one hundred twenty-eight billion, nine hundred fourteen million, eight hundred five thousand, nine hundred sixty-eight".