21336313799 has 2 divisors, whose sum is σ = 21336313800. Its totient is φ = 21336313798.

The previous prime is 21336313793. The next prime is 21336313841. The reversal of 21336313799 is 99731363312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21336313799 - 2²⁸ = 21067878343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21336313793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10668156899 + 10668156900.

It is an arithmetic number, because the mean of its divisors is an integer number (10668156900).

Almost surely, 2^21336313799 is an apocalyptic number.

21336313799 is a deficient number, since it is larger than the sum of its proper divisors (1).

21336313799 is an equidigital number, since it uses as much as digits as its factorization.

21336313799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 47.

The spelling of 21336313799 in words is "twenty-one billion, three hundred thirty-six million, three hundred thirteen thousand, seven hundred ninety-nine".