320788775429 has 2 divisors, whose sum is σ = 320788775430. Its totient is φ = 320788775428.

The previous prime is 320788775399. The next prime is 320788775443. The reversal of 320788775429 is 924577887023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 301077177025 + 19711598404 = 548705^2 + 140398^2 .

It is a cyclic number.

It is not a de Polignac number, because 320788775429 - 2¹⁶ = 320788709893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320788777429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160394387714 + 160394387715.

It is an arithmetic number, because the mean of its divisors is an integer number (160394387715).

Almost surely, 2^320788775429 is an apocalyptic number.

It is an amenable number.

320788775429 is a deficient number, since it is larger than the sum of its proper divisors (1).

320788775429 is an equidigital number, since it uses as much as digits as its factorization.

320788775429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47416320, while the sum is 62.

The spelling of 320788775429 in words is "three hundred twenty billion, seven hundred eighty-eight million, seven hundred seventy-five thousand, four hundred twenty-nine".