128773807968 has 192 divisors, whose sum is σ = 380676506112. Its totient is φ = 37818654720.

The previous prime is 128773807963. The next prime is 128773807997. The reversal of 128773807968 is 869708377821.

It is a junction number, because it is equal to n+sod(n) for n = 128773807899 and 128773807908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128773807961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14089096 + ... + 14098232.

It is an arithmetic number, because the mean of its divisors is an integer number (1982690136).

Almost surely, 2^128773807968 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 128773807968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190338253056).

128773807968 is an abundant number, since it is smaller than the sum of its proper divisors (251902698144).

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

128773807968 is a wasteful number, since it uses less digits than its factorization.

128773807968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9677 (or 9669 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 66.

The spelling of 128773807968 in words is "one hundred twenty-eight billion, seven hundred seventy-three million, eight hundred seven thousand, nine hundred sixty-eight".