19975334399 has 2 divisors, whose sum is σ = 19975334400. Its totient is φ = 19975334398.

The previous prime is 19975334387. The next prime is 19975334443. The reversal of 19975334399 is 99343357991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19975334399 - 2⁸ = 19975334143 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19975034399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9987667199 + 9987667200.

It is an arithmetic number, because the mean of its divisors is an integer number (9987667200).

Almost surely, 2^19975334399 is an apocalyptic number.

19975334399 is a deficient number, since it is larger than the sum of its proper divisors (1).

19975334399 is an equidigital number, since it uses as much as digits as its factorization.

19975334399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24800580, while the sum is 62.

The spelling of 19975334399 in words is "nineteen billion, nine hundred seventy-five million, three hundred thirty-four thousand, three hundred ninety-nine".