320463263305 has 4 divisors (see below), whose sum is σ = 384555915972. Its totient is φ = 256370610640.

The previous prime is 320463263293. The next prime is 320463263363. The reversal of 320463263305 is 503362364023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503362364023 = 10597 ⋅47500459.

It can be written as a sum of positive squares in 2 ways, for example, as 164814076729 + 155649186576 = 405973^2 + 394524^2 .

It is not a de Polignac number, because 320463263305 - 2⁹ = 320463262793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32046326326 + ... + 32046326335.

It is an arithmetic number, because the mean of its divisors is an integer number (96138978993).

Almost surely, 2^320463263305 is an apocalyptic number.

It is an amenable number.

320463263305 is a deficient number, since it is larger than the sum of its proper divisors (64092652667).

320463263305 is an equidigital number, since it uses as much as digits as its factorization.

320463263305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64092652666.

The product of its (nonzero) digits is 233280, while the sum is 37.

The spelling of 320463263305 in words is "three hundred twenty billion, four hundred sixty-three million, two hundred sixty-three thousand, three hundred five".