6726128289 has 8 divisors (see below), whose sum is σ = 8968573152. Its totient is φ = 4483884480.

The previous prime is 6726128261. The next prime is 6726128323. The reversal of 6726128289 is 9828216276.

6726128289 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6726128289 - 2⁸ = 6726128033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6726128389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66649 + ... + 133769.

It is an arithmetic number, because the mean of its divisors is an integer number (1121071644).

Almost surely, 2^6726128289 is an apocalyptic number.

It is an amenable number.

6726128289 is a deficient number, since it is larger than the sum of its proper divisors (2242444863).

6726128289 is a wasteful number, since it uses less digits than its factorization.

6726128289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100527.

The product of its digits is 1161216, while the sum is 51.

The square root of 6726128289 is about 82012.9763452102. The cubic root of 6726128289 is about 1887.6510565714.

The spelling of 6726128289 in words is "six billion, seven hundred twenty-six million, one hundred twenty-eight thousand, two hundred eighty-nine".