6789135639 has 24 divisors (see below), whose sum is σ = 10715303536. Its totient is φ = 3798115200.

The previous prime is 6789135637. The next prime is 6789135643. The reversal of 6789135639 is 9365319876.

It is a happy number.

It is not a de Polignac number, because 6789135639 - 2¹ = 6789135637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6789135637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 714622 + ... + 724059.

Almost surely, 2^6789135639 is an apocalyptic number.

6789135639 is a deficient number, since it is larger than the sum of its proper divisors (3926167897).

6789135639 is a wasteful number, since it uses less digits than its factorization.

6789135639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438719 (or 1438708 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 57.

The square root of 6789135639 is about 82396.2113145987. The cubic root of 6789135639 is about 1893.5269694842.

The spelling of 6789135639 in words is "six billion, seven hundred eighty-nine million, one hundred thirty-five thousand, six hundred thirty-nine".