320994555793 has 2 divisors, whose sum is σ = 320994555794. Its totient is φ = 320994555792.

The previous prime is 320994555731. The next prime is 320994555803. The reversal of 320994555793 is 397555499023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269005083649 + 51989472144 = 518657^2 + 228012^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320994555793 is a prime.

It is not a weakly prime, because it can be changed into another prime (320994555593) 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, 160497277896 + 160497277897.

It is an arithmetic number, because the mean of its divisors is an integer number (160497277897).

Almost surely, 2^320994555793 is an apocalyptic number.

It is an amenable number.

320994555793 is a deficient number, since it is larger than the sum of its proper divisors (1).

320994555793 is an equidigital number, since it uses as much as digits as its factorization.

320994555793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927000, while the sum is 61.

The spelling of 320994555793 in words is "three hundred twenty billion, nine hundred ninety-four million, five hundred fifty-five thousand, seven hundred ninety-three".