320020403421377 has 2 divisors, whose sum is σ = 320020403421378. Its totient is φ = 320020403421376.

The previous prime is 320020403421349. The next prime is 320020403421419. The reversal of 320020403421377 is 773124304020023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311769083976256 + 8251319445121 = 17656984^2 + 2872511^2 .

It is a cyclic number.

It is not a de Polignac number, because 320020403421377 - 2¹⁴ = 320020403404993 is a prime.

It is a super-2 number, since 2×320020403421377² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320020403421377.

It is not a weakly prime, because it can be changed into another prime (320020403421577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160010201710688 + 160010201710689.

It is an arithmetic number, because the mean of its divisors is an integer number (160010201710689).

Almost surely, 2^{320020403421377} is an apocalyptic number.

It is an amenable number.

320020403421377 is a deficient number, since it is larger than the sum of its proper divisors (1).

320020403421377 is an equidigital number, since it uses as much as digits as its factorization.

320020403421377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 38.

The spelling of 320020403421377 in words is "three hundred twenty trillion, twenty billion, four hundred three million, four hundred twenty-one thousand, three hundred seventy-seven".