6839354871681 has 8 divisors (see below), whose sum is σ = 9120729382944. Its totient is φ = 4558775137440.

The previous prime is 6839354871677. The next prime is 6839354871683. The reversal of 6839354871681 is 1861784539386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6839354871681 - 2² = 6839354871677 is a prime.

It is a super-2 number, since 2×6839354871681² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6839354871683) 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 7 ways as a sum of consecutive naturals, for example, 198674175 + ... + 198708596.

It is an arithmetic number, because the mean of its divisors is an integer number (1140091172868).

Almost surely, 2^{6839354871681} is an apocalyptic number.

It is an amenable number.

6839354871681 is a deficient number, since it is larger than the sum of its proper divisors (2281374511263).

6839354871681 is a wasteful number, since it uses less digits than its factorization.

6839354871681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397388511.

The product of its digits is 209018880, while the sum is 69.

The spelling of 6839354871681 in words is "six trillion, eight hundred thirty-nine billion, three hundred fifty-four million, eight hundred seventy-one thousand, six hundred eighty-one".