6804004565991 has 8 divisors (see below), whose sum is σ = 9102968567280. Its totient is φ = 4520521804352.

The previous prime is 6804004565947. The next prime is 6804004566013. The reversal of 6804004565991 is 1995654004086.

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

It is a cyclic number.

It is not a de Polignac number, because 6804004565991 - 2⁷ = 6804004565863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6804004565191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3870308886 + ... + 3870310643.

It is an arithmetic number, because the mean of its divisors is an integer number (1137871070910).

Almost surely, 2^{6804004565991} is an apocalyptic number.

6804004565991 is a deficient number, since it is larger than the sum of its proper divisors (2298964001289).

6804004565991 is a wasteful number, since it uses less digits than its factorization.

6804004565991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7740619825.

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 6804004565991 in words is "six trillion, eight hundred four billion, four million, five hundred sixty-five thousand, nine hundred ninety-one".