19714640443 has 2 divisors, whose sum is σ = 19714640444. Its totient is φ = 19714640442.

The previous prime is 19714640441. The next prime is 19714640489. The reversal of 19714640443 is 34404641791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19714640443 - 2¹ = 19714640441 is a prime.

Together with 19714640441, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19714640443.

It is not a weakly prime, because it can be changed into another prime (19714640441) 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, 9857320221 + 9857320222.

It is an arithmetic number, because the mean of its divisors is an integer number (9857320222).

Almost surely, 2^19714640443 is an apocalyptic number.

19714640443 is a deficient number, since it is larger than the sum of its proper divisors (1).

19714640443 is an equidigital number, since it uses as much as digits as its factorization.

19714640443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 19714640443 in words is "nineteen billion, seven hundred fourteen million, six hundred forty thousand, four hundred forty-three".