20533413499 has 2 divisors, whose sum is σ = 20533413500. Its totient is φ = 20533413498.

The previous prime is 20533413473. The next prime is 20533413539. The reversal of 20533413499 is 99431433502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20533413499 - 2²⁵ = 20499859067 is a prime.

It is not a weakly prime, because it can be changed into another prime (20533416499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10266706749 + 10266706750.

It is an arithmetic number, because the mean of its divisors is an integer number (10266706750).

Almost surely, 2^20533413499 is an apocalyptic number.

20533413499 is a deficient number, since it is larger than the sum of its proper divisors (1).

20533413499 is an equidigital number, since it uses as much as digits as its factorization.

20533413499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 20533413499 in words is "twenty billion, five hundred thirty-three million, four hundred thirteen thousand, four hundred ninety-nine".