320254554161 has 2 divisors, whose sum is σ = 320254554162. Its totient is φ = 320254554160.

The previous prime is 320254554107. The next prime is 320254554209. The reversal of 320254554161 is 161455452023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302544001600 + 17710552561 = 550040^2 + 133081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320254554161 is a prime.

It is not a weakly prime, because it can be changed into another prime (320254554461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160127277080 + 160127277081.

It is an arithmetic number, because the mean of its divisors is an integer number (160127277081).

Almost surely, 2^320254554161 is an apocalyptic number.

It is an amenable number.

320254554161 is a deficient number, since it is larger than the sum of its proper divisors (1).

320254554161 is an equidigital number, since it uses as much as digits as its factorization.

320254554161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 320254554161 in words is "three hundred twenty billion, two hundred fifty-four million, five hundred fifty-four thousand, one hundred sixty-one".