6804142991 has 16 divisors (see below), whose sum is σ = 7321641600. Its totient is φ = 6303974688.

The previous prime is 6804142981. The next prime is 6804142993. The reversal of 6804142991 is 1992414086.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6804142991 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 (6804142993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157721 + ... + 196173.

It is an arithmetic number, because the mean of its divisors is an integer number (457602600).

Almost surely, 2^6804142991 is an apocalyptic number.

6804142991 is a deficient number, since it is larger than the sum of its proper divisors (517498609).

6804142991 is a wasteful number, since it uses less digits than its factorization.

6804142991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38678.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 6804142991 is about 82487.2292600497. The cubic root of 6804142991 is about 1894.9211534922.

The spelling of 6804142991 in words is "six billion, eight hundred four million, one hundred forty-two thousand, nine hundred ninety-one".