6851338843 has 4 divisors (see below), whose sum is σ = 6857141328. Its totient is φ = 6845536360.

The previous prime is 6851338829. The next prime is 6851338847. The reversal of 6851338843 is 3488331586.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3488331586 = 2 ⋅1744165793.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6851338843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6851338847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2899471 + ... + 2901832.

It is an arithmetic number, because the mean of its divisors is an integer number (1714285332).

Almost surely, 2^6851338843 is an apocalyptic number.

6851338843 is a deficient number, since it is larger than the sum of its proper divisors (5802485).

6851338843 is a wasteful number, since it uses less digits than its factorization.

6851338843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5802484.

The product of its digits is 1658880, while the sum is 49.

The square root of 6851338843 is about 82772.8146374158. The cubic root of 6851338843 is about 1899.2923350742.

The spelling of 6851338843 in words is "six billion, eight hundred fifty-one million, three hundred thirty-eight thousand, eight hundred forty-three".