320854713989 has 2 divisors, whose sum is σ = 320854713990. Its totient is φ = 320854713988.

The previous prime is 320854713967. The next prime is 320854714027. The reversal of 320854713989 is 989317458023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202012493764 + 118842220225 = 449458^2 + 344735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320854713989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320854713929) 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, 160427356994 + 160427356995.

It is an arithmetic number, because the mean of its divisors is an integer number (160427356995).

Almost surely, 2^320854713989 is an apocalyptic number.

It is an amenable number.

320854713989 is a deficient number, since it is larger than the sum of its proper divisors (1).

320854713989 is an equidigital number, since it uses as much as digits as its factorization.

320854713989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 320854713989 in words is "three hundred twenty billion, eight hundred fifty-four million, seven hundred thirteen thousand, nine hundred eighty-nine".