6909023408689 has 4 divisors (see below), whose sum is σ = 7095753771124. Its totient is φ = 6722293046256.

The previous prime is 6909023408653. The next prime is 6909023408711. The reversal of 6909023408689 is 9868043209096.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3749517158689 + 3159506250000 = 1936367^2 + 1777500^2 .

It is a cyclic number.

It is not a de Polignac number, because 6909023408689 - 2¹¹ = 6909023406641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6909023408689.

It is not an unprimeable number, because it can be changed into a prime (6909023408389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93365181162 + ... + 93365181235.

It is an arithmetic number, because the mean of its divisors is an integer number (1773938442781).

Almost surely, 2^{6909023408689} is an apocalyptic number.

It is an amenable number.

6909023408689 is a deficient number, since it is larger than the sum of its proper divisors (186730362435).

6909023408689 is a wasteful number, since it uses less digits than its factorization.

6909023408689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186730362434.

The product of its (nonzero) digits is 40310784, while the sum is 64.

The spelling of 6909023408689 in words is "six trillion, nine hundred nine billion, twenty-three million, four hundred eight thousand, six hundred eighty-nine".