6812971681291 has 8 divisors (see below), whose sum is σ = 6848125691904. Its totient is φ = 6777858765480.

The previous prime is 6812971681277. The next prime is 6812971681319. The reversal of 6812971681291 is 1921861792186.

6812971681291 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 6812971681291 - 2⁷ = 6812971681163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6812981681291) 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 7 ways as a sum of consecutive naturals, for example, 9941245 + ... + 10604446.

It is an arithmetic number, because the mean of its divisors is an integer number (856015711488).

Almost surely, 2^{6812971681291} is an apocalyptic number.

6812971681291 is a deficient number, since it is larger than the sum of its proper divisors (35154010613).

6812971681291 is a wasteful number, since it uses less digits than its factorization.

6812971681291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20547401.

The product of its digits is 5225472, while the sum is 61.

The spelling of 6812971681291 in words is "six trillion, eight hundred twelve billion, nine hundred seventy-one million, six hundred eighty-one thousand, two hundred ninety-one".