6839521446871 has 4 divisors (see below), whose sum is σ = 6839579056752. Its totient is φ = 6839463836992.

The previous prime is 6839521446853. The next prime is 6839521446941. The reversal of 6839521446871 is 1786441259386.

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 6839521446871 - 2⁵ = 6839521446839 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 (6839521446271) 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, 28626490 + ... + 28864423.

It is an arithmetic number, because the mean of its divisors is an integer number (1709894764188).

Almost surely, 2^{6839521446871} is an apocalyptic number.

6839521446871 is a deficient number, since it is larger than the sum of its proper divisors (57609881).

6839521446871 is a wasteful number, since it uses less digits than its factorization.

6839521446871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57609880.

The product of its digits is 69672960, while the sum is 64.

The spelling of 6839521446871 in words is "six trillion, eight hundred thirty-nine billion, five hundred twenty-one million, four hundred forty-six thousand, eight hundred seventy-one".