21324263339 has 2 divisors, whose sum is σ = 21324263340. Its totient is φ = 21324263338.

The previous prime is 21324263333. The next prime is 21324263341. The reversal of 21324263339 is 93336242312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21324263339 - 2²⁰ = 21323214763 is a prime.

Together with 21324263341, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21324263333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10662131669 + 10662131670.

It is an arithmetic number, because the mean of its divisors is an integer number (10662131670).

Almost surely, 2^21324263339 is an apocalyptic number.

21324263339 is a deficient number, since it is larger than the sum of its proper divisors (1).

21324263339 is an equidigital number, since it uses as much as digits as its factorization.

21324263339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 38.

The spelling of 21324263339 in words is "twenty-one billion, three hundred twenty-four million, two hundred sixty-three thousand, three hundred thirty-nine".