320455403129 has 2 divisors, whose sum is σ = 320455403130. Its totient is φ = 320455403128.

The previous prime is 320455403101. The next prime is 320455403137. The reversal of 320455403129 is 921304554023.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305009884729 + 15445518400 = 552277^2 + 124280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320455403129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 320455403092 and 320455403101.

It is not a weakly prime, because it can be changed into another prime (320455403189) 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, 160227701564 + 160227701565.

It is an arithmetic number, because the mean of its divisors is an integer number (160227701565).

Almost surely, 2^320455403129 is an apocalyptic number.

It is an amenable number.

320455403129 is a deficient number, since it is larger than the sum of its proper divisors (1).

320455403129 is an equidigital number, since it uses as much as digits as its factorization.

320455403129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 320455403129 in words is "three hundred twenty billion, four hundred fifty-five million, four hundred three thousand, one hundred twenty-nine".