20533416499 has 2 divisors, whose sum is σ = 20533416500. Its totient is φ = 20533416498.

The previous prime is 20533416473. The next prime is 20533416503. The reversal of 20533416499 is 99461433502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20533416499 - 2⁵ = 20533416467 is a prime.

It is not a weakly prime, because it can be changed into another prime (20533416469) 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, 10266708249 + 10266708250.

It is an arithmetic number, because the mean of its divisors is an integer number (10266708250).

Almost surely, 2^20533416499 is an apocalyptic number.

20533416499 is a deficient number, since it is larger than the sum of its proper divisors (1).

20533416499 is an equidigital number, since it uses as much as digits as its factorization.

20533416499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 20533416499 in words is "twenty billion, five hundred thirty-three million, four hundred sixteen thousand, four hundred ninety-nine".