320366272729 has 2 divisors, whose sum is σ = 320366272730. Its totient is φ = 320366272728.

The previous prime is 320366272727. The next prime is 320366272757. The reversal of 320366272729 is 927272663023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251575474329 + 68790798400 = 501573^2 + 262280^2 .

It is a cyclic number.

It is not a de Polignac number, because 320366272729 - 2¹ = 320366272727 is a prime.

Together with 320366272727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (320366272727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160183136364 + 160183136365.

It is an arithmetic number, because the mean of its divisors is an integer number (160183136365).

Almost surely, 2^320366272729 is an apocalyptic number.

It is an amenable number.

320366272729 is a deficient number, since it is larger than the sum of its proper divisors (1).

320366272729 is an equidigital number, since it uses as much as digits as its factorization.

320366272729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 49.

The spelling of 320366272729 in words is "three hundred twenty billion, three hundred sixty-six million, two hundred seventy-two thousand, seven hundred twenty-nine".