682941982421 has 2 divisors, whose sum is σ = 682941982422. Its totient is φ = 682941982420.

The previous prime is 682941982391. The next prime is 682941982423. The reversal of 682941982421 is 124289149286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 655515310321 + 27426672100 = 809639^2 + 165610^2 .

It is a cyclic number.

It is not a de Polignac number, because 682941982421 - 2¹⁴ = 682941966037 is a prime.

Together with 682941982423, 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 (682941982423) 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 as a sum of consecutive naturals, namely, 341470991210 + 341470991211.

It is an arithmetic number, because the mean of its divisors is an integer number (341470991211).

Almost surely, 2^682941982421 is an apocalyptic number.

It is an amenable number.

682941982421 is a deficient number, since it is larger than the sum of its proper divisors (1).

682941982421 is an equidigital number, since it uses as much as digits as its factorization.

682941982421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3981312, while the sum is 56.

The spelling of 682941982421 in words is "six hundred eighty-two billion, nine hundred forty-one million, nine hundred eighty-two thousand, four hundred twenty-one".