320543246550539 has 2 divisors, whose sum is σ = 320543246550540. Its totient is φ = 320543246550538.

The previous prime is 320543246550491. The next prime is 320543246550551. The reversal of 320543246550539 is 935055642345023.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320543246550539 is a prime.

It is not a weakly prime, because it can be changed into another prime (320543446550539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160271623275269 + 160271623275270.

It is an arithmetic number, because the mean of its divisors is an integer number (160271623275270).

Almost surely, 2^{320543246550539} is an apocalyptic number.

320543246550539 is a deficient number, since it is larger than the sum of its proper divisors (1).

320543246550539 is an equidigital number, since it uses as much as digits as its factorization.

320543246550539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320000, while the sum is 56.

The spelling of 320543246550539 in words is "three hundred twenty trillion, five hundred forty-three billion, two hundred forty-six million, five hundred fifty thousand, five hundred thirty-nine".