320242493999 has 2 divisors, whose sum is σ = 320242494000. Its totient is φ = 320242493998.

The previous prime is 320242493993. The next prime is 320242494001. The reversal of 320242493999 is 999394242023.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320242493999 - 2²⁸ = 319974058543 is a prime.

Together with 320242494001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320242493993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160121246999 + 160121247000.

It is an arithmetic number, because the mean of its divisors is an integer number (160121247000).

Almost surely, 2^320242493999 is an apocalyptic number.

320242493999 is a deficient number, since it is larger than the sum of its proper divisors (1).

320242493999 is an equidigital number, since it uses as much as digits as its factorization.

320242493999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7558272, while the sum is 56.

The spelling of 320242493999 in words is "three hundred twenty billion, two hundred forty-two million, four hundred ninety-three thousand, nine hundred ninety-nine".