128065616 has 60 divisors (see below), whose sum is σ = 290070720. Its totient is φ = 54613440.

The previous prime is 128065603. The next prime is 128065627. The reversal of 128065616 is 616560821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296921 + ... + 297351.

It is an arithmetic number, because the mean of its divisors is an integer number (4834512).

Almost surely, 2^128065616 is an apocalyptic number.

128065616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128065616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145035360).

128065616 is an abundant number, since it is smaller than the sum of its proper divisors (162005104).

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

128065616 is a wasteful number, since it uses less digits than its factorization.

128065616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 128065616 is about 11316.6079723564. The cubic root of 128065616 is about 504.0545208509.

The spelling of 128065616 in words is "one hundred twenty-eight million, sixty-five thousand, six hundred sixteen".