19682716423 has 2 divisors, whose sum is σ = 19682716424. Its totient is φ = 19682716422.

The previous prime is 19682716397. The next prime is 19682716439. The reversal of 19682716423 is 32461728691.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19682716423 - 2¹³ = 19682708231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19682716453) 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, 9841358211 + 9841358212.

It is an arithmetic number, because the mean of its divisors is an integer number (9841358212).

Almost surely, 2^19682716423 is an apocalyptic number.

19682716423 is a deficient number, since it is larger than the sum of its proper divisors (1).

19682716423 is an equidigital number, since it uses as much as digits as its factorization.

19682716423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The spelling of 19682716423 in words is "nineteen billion, six hundred eighty-two million, seven hundred sixteen thousand, four hundred twenty-three".