20541333899 has 2 divisors, whose sum is σ = 20541333900. Its totient is φ = 20541333898.

The previous prime is 20541333893. The next prime is 20541333929. The reversal of 20541333899 is 99833314502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20541333899 - 2⁸ = 20541333643 is a prime.

It is not a weakly prime, because it can be changed into another prime (20541333893) 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, 10270666949 + 10270666950.

It is an arithmetic number, because the mean of its divisors is an integer number (10270666950).

Almost surely, 2^20541333899 is an apocalyptic number.

20541333899 is a deficient number, since it is larger than the sum of its proper divisors (1).

20541333899 is an equidigital number, since it uses as much as digits as its factorization.

20541333899 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 47.

The spelling of 20541333899 in words is "twenty billion, five hundred forty-one million, three hundred thirty-three thousand, eight hundred ninety-nine".