6811365971 has 4 divisors (see below), whose sum is σ = 6812545944. Its totient is φ = 6810186000.

The previous prime is 6811365929. The next prime is 6811365989. The reversal of 6811365971 is 1795631186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1795631186 = 2 ⋅897815593.

It is a cyclic number.

It is not a de Polignac number, because 6811365971 - 2⁶ = 6811365907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6811865971) 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 3 ways as a sum of consecutive naturals, for example, 581285 + ... + 592886.

It is an arithmetic number, because the mean of its divisors is an integer number (1703136486).

Almost surely, 2^6811365971 is an apocalyptic number.

6811365971 is a deficient number, since it is larger than the sum of its proper divisors (1179973).

6811365971 is a wasteful number, since it uses less digits than its factorization.

6811365971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179972.

The product of its digits is 272160, while the sum is 47.

The square root of 6811365971 is about 82531.0000605833. Note that the first 4 decimals coincide. The cubic root of 6811365971 is about 1895.5914381164.

The spelling of 6811365971 in words is "six billion, eight hundred eleven million, three hundred sixty-five thousand, nine hundred seventy-one".