43683681719 has 2 divisors, whose sum is σ = 43683681720. Its totient is φ = 43683681718.

The previous prime is 43683681709. The next prime is 43683681721. The reversal of 43683681719 is 91718638634.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43683681719 - 2⁸ = 43683681463 is a prime.

It is a super-2 number, since 2×43683681719² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 43683681721, 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 (43683681709) 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 as a sum of consecutive naturals, namely, 21841840859 + 21841840860.

It is an arithmetic number, because the mean of its divisors is an integer number (21841840860).

Almost surely, 2^43683681719 is an apocalyptic number.

43683681719 is a deficient number, since it is larger than the sum of its proper divisors (1).

43683681719 is an equidigital number, since it uses as much as digits as its factorization.

43683681719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 56.

The spelling of 43683681719 in words is "forty-three billion, six hundred eighty-three million, six hundred eighty-one thousand, seven hundred nineteen".