6800865811 has 4 divisors (see below), whose sum is σ = 6886952800. Its totient is φ = 6714778824.

The previous prime is 6800865809. The next prime is 6800865821. The reversal of 6800865811 is 1185680086.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6800865811 - 2¹ = 6800865809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6800865821) 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, 43043376 + ... + 43043533.

It is an arithmetic number, because the mean of its divisors is an integer number (1721738200).

Almost surely, 2^6800865811 is an apocalyptic number.

6800865811 is a deficient number, since it is larger than the sum of its proper divisors (86086989).

6800865811 is an equidigital number, since it uses as much as digits as its factorization.

6800865811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86086988.

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 6800865811 is about 82467.3620955587. The cubic root of 6800865811 is about 1894.6168783378.

The spelling of 6800865811 in words is "six billion, eight hundred million, eight hundred sixty-five thousand, eight hundred eleven".