320055541777 has 2 divisors, whose sum is σ = 320055541778. Its totient is φ = 320055541776.

The previous prime is 320055541721. The next prime is 320055541789. The reversal of 320055541777 is 777145550023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217066537216 + 102989004561 = 465904^2 + 320919^2 .

It is a cyclic number.

It is not a de Polignac number, because 320055541777 - 2²³ = 320047153169 is a prime.

It is not a weakly prime, because it can be changed into another prime (320055541277) 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, 160027770888 + 160027770889.

It is an arithmetic number, because the mean of its divisors is an integer number (160027770889).

Almost surely, 2^320055541777 is an apocalyptic number.

It is an amenable number.

320055541777 is a deficient number, since it is larger than the sum of its proper divisors (1).

320055541777 is an equidigital number, since it uses as much as digits as its factorization.

320055541777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1029000, while the sum is 46.

The spelling of 320055541777 in words is "three hundred twenty billion, fifty-five million, five hundred forty-one thousand, seven hundred seventy-seven".