320224421977 has 2 divisors, whose sum is σ = 320224421978. Its totient is φ = 320224421976.

The previous prime is 320224421947. The next prime is 320224421987. The reversal of 320224421977 is 779124422023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 300374148096 + 19850273881 = 548064^2 + 140891^2 .

It is an emirp because it is prime and its reverse (779124422023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320224421977 - 2¹⁹ = 320223897689 is a prime.

It is not a weakly prime, because it can be changed into another prime (320224421947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160112210988 + 160112210989.

It is an arithmetic number, because the mean of its divisors is an integer number (160112210989).

Almost surely, 2^320224421977 is an apocalyptic number.

It is an amenable number.

320224421977 is a deficient number, since it is larger than the sum of its proper divisors (1).

320224421977 is an equidigital number, since it uses as much as digits as its factorization.

320224421977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 320224421977 in words is "three hundred twenty billion, two hundred twenty-four million, four hundred twenty-one thousand, nine hundred seventy-seven".