20653336399 has 2 divisors, whose sum is σ = 20653336400. Its totient is φ = 20653336398.

The previous prime is 20653336393. The next prime is 20653336409. The reversal of 20653336399 is 99363335602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20653336399 - 2⁷ = 20653336271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20653336393) 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, 10326668199 + 10326668200.

It is an arithmetic number, because the mean of its divisors is an integer number (10326668200).

Almost surely, 2^20653336399 is an apocalyptic number.

20653336399 is a deficient number, since it is larger than the sum of its proper divisors (1).

20653336399 is an equidigital number, since it uses as much as digits as its factorization.

20653336399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2361960, while the sum is 49.

The spelling of 20653336399 in words is "twenty billion, six hundred fifty-three million, three hundred thirty-six thousand, three hundred ninety-nine".