320641464305 has 16 divisors (see below), whose sum is σ = 393065616384. Its totient is φ = 250985634240.

The previous prime is 320641464233. The next prime is 320641464383. The reversal of 320641464305 is 503464146023.

It is not a de Polignac number, because 320641464305 - 2⁸ = 320641464049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665399 + ... + 1041171.

It is an arithmetic number, because the mean of its divisors is an integer number (24566601024).

Almost surely, 2^320641464305 is an apocalyptic number.

It is an amenable number.

320641464305 is a deficient number, since it is larger than the sum of its proper divisors (72424152079).

320641464305 is a wasteful number, since it uses less digits than its factorization.

320641464305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379456.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 320641464305 in words is "three hundred twenty billion, six hundred forty-one million, four hundred sixty-four thousand, three hundred five".