6609235128 has 64 divisors (see below), whose sum is σ = 16947740160. Its totient is φ = 2146864896.

The previous prime is 6609235103. The next prime is 6609235133. The reversal of 6609235128 is 8215329066.

It is a self number, because there is not a number n which added to its sum of digits gives 6609235128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250251 + ... + 275397.

It is an arithmetic number, because the mean of its divisors is an integer number (264808440).

Almost surely, 2^6609235128 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 6609235128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8473870080).

6609235128 is an abundant number, since it is smaller than the sum of its proper divisors (10338505032).

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

6609235128 is a wasteful number, since it uses less digits than its factorization.

6609235128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25436 (or 25432 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 6609235128 is about 81297.2024610933. The cubic root of 6609235128 is about 1876.6519488694.

The spelling of 6609235128 in words is "six billion, six hundred nine million, two hundred thirty-five thousand, one hundred twenty-eight".