320449757922 has 126 divisors (see below), whose sum is σ = 812112472353. Its totient is φ = 91321708464.

The previous prime is 320449757921. The next prime is 320449757923. The reversal of 320449757922 is 229757944023.

It is a happy number.

320449757922 is a `hidden beast` number, since 3 + 2 + 0 + 4 + 49 + 7 + 579 + 22 = 666.

It is an interprime number because it is at equal distance from previous prime (320449757921) and next prime (320449757923).

It can be written as a sum of positive squares in 2 ways, for example, as 296307124281 + 24142633641 = 544341^2 + 155379^2 .

It is a tau number, because it is divible by the number of its divisors (126).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=400281.

It is not an unprimeable number, because it can be changed into a prime (320449757921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 823778104 + ... + 823778492.

Almost surely, 2^320449757922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320449757922

320449757922 is an abundant number, since it is smaller than the sum of its proper divisors (491662714431).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320449757922 is an frugal number, since it uses more digits than its factorization.

320449757922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 320449757922 in words is "three hundred twenty billion, four hundred forty-nine million, seven hundred fifty-seven thousand, nine hundred twenty-two".