320021439919 has 2 divisors, whose sum is σ = 320021439920. Its totient is φ = 320021439918.

The previous prime is 320021439869. The next prime is 320021440007. The reversal of 320021439919 is 919934120023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320021439919 - 2¹⁵ = 320021407151 is a prime.

It is a super-2 number, since 2×320021439919² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320021437919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160010719959 + 160010719960.

It is an arithmetic number, because the mean of its divisors is an integer number (160010719960).

Almost surely, 2^320021439919 is an apocalyptic number.

320021439919 is a deficient number, since it is larger than the sum of its proper divisors (1).

320021439919 is an equidigital number, since it uses as much as digits as its factorization.

320021439919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 43.

The spelling of 320021439919 in words is "three hundred twenty billion, twenty-one million, four hundred thirty-nine thousand, nine hundred nineteen".