6873481421 has 2 divisors, whose sum is σ = 6873481422. Its totient is φ = 6873481420.

The previous prime is 6873481411. The next prime is 6873481423. The reversal of 6873481421 is 1241843786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4149163396 + 2724318025 = 64414^2 + 52195^2 .

It is a cyclic number.

It is not a de Polignac number, because 6873481421 - 2²⁶ = 6806372557 is a prime.

Together with 6873481423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6873481423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3436740710 + 3436740711.

It is an arithmetic number, because the mean of its divisors is an integer number (3436740711).

Almost surely, 2^6873481421 is an apocalyptic number.

It is an amenable number.

6873481421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6873481421 is an equidigital number, since it uses as much as digits as its factorization.

6873481421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 44.

The square root of 6873481421 is about 82906.4618772264. The cubic root of 6873481421 is about 1901.3362180412.

The spelling of 6873481421 in words is "six billion, eight hundred seventy-three million, four hundred eighty-one thousand, four hundred twenty-one".