128606647122 has 54 divisors (see below), whose sum is σ = 280797006789. Its totient is φ = 42540748560.

The previous prime is 128606647093. The next prime is 128606647129. The reversal of 128606647122 is 221746606821.

128606647122 is a `hidden beast` number, since 1 + 28 + 606 + 6 + 4 + 7 + 12 + 2 = 666.

128606647122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 77728882401 + 50877764721 = 278799^2 + 225561^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=253581.

It is not an unprimeable number, because it can be changed into a prime (128606647129) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 275388733 + ... + 275389199.

Almost surely, 2^128606647122 is an apocalyptic number.

128606647122 is an abundant number, since it is smaller than the sum of its proper divisors (152190359667).

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

128606647122 is an frugal number, since it uses more digits than its factorization.

128606647122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 128606647122 in words is "one hundred twenty-eight billion, six hundred six million, six hundred forty-seven thousand, one hundred twenty-two".