320450245945 has 16 divisors (see below), whose sum is σ = 385687092240. Its totient is φ = 255595884544.

The previous prime is 320450245919. The next prime is 320450245991. The reversal of 320450245945 is 549542054023.

It can be written as a sum of positive squares in 8 ways, for example, as 21944274496 + 298505971449 = 148136^2 + 546357^2 .

It is a cyclic number.

It is not a de Polignac number, because 320450245945 - 2²⁵ = 320416691513 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 21838071 + ... + 21852739.

It is an arithmetic number, because the mean of its divisors is an integer number (24105443265).

Almost surely, 2^320450245945 is an apocalyptic number.

It is an amenable number.

320450245945 is a deficient number, since it is larger than the sum of its proper divisors (65236846295).

320450245945 is a wasteful number, since it uses less digits than its factorization.

320450245945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27404.

The product of its (nonzero) digits is 864000, while the sum is 43.

Adding to 320450245945 its reverse (549542054023), we get a palindrome (869992299968).

The spelling of 320450245945 in words is "three hundred twenty billion, four hundred fifty million, two hundred forty-five thousand, nine hundred forty-five".