1323319945663 has 2 divisors, whose sum is σ = 1323319945664. Its totient is φ = 1323319945662.

The previous prime is 1323319945637. The next prime is 1323319945687. The reversal of 1323319945663 is 3665499133231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323319945663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323319945613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661659972831 + 661659972832.

It is an arithmetic number, because the mean of its divisors is an integer number (661659972832).

Almost surely, 2^{1323319945663} is an apocalyptic number.

1323319945663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323319945663 is an equidigital number, since it uses as much as digits as its factorization.

1323319945663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9447840, while the sum is 55.

The spelling of 1323319945663 in words is "one trillion, three hundred twenty-three billion, three hundred nineteen million, nine hundred forty-five thousand, six hundred sixty-three".