320376656641 has 2 divisors, whose sum is σ = 320376656642. Its totient is φ = 320376656640.

The previous prime is 320376656599. The next prime is 320376656647. The reversal of 320376656641 is 146656673023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318664766016 + 1711890625 = 564504^2 + 41375^2 .

It is a cyclic number.

It is not a de Polignac number, because 320376656641 - 2¹¹ = 320376654593 is a prime.

It is not a weakly prime, because it can be changed into another prime (320376656647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160188328320 + 160188328321.

It is an arithmetic number, because the mean of its divisors is an integer number (160188328321).

Almost surely, 2^320376656641 is an apocalyptic number.

It is an amenable number.

320376656641 is a deficient number, since it is larger than the sum of its proper divisors (1).

320376656641 is an equidigital number, since it uses as much as digits as its factorization.

320376656641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 49.

The spelling of 320376656641 in words is "three hundred twenty billion, three hundred seventy-six million, six hundred fifty-six thousand, six hundred forty-one".