320660321315 has 32 divisors (see below), whose sum is σ = 393375191040. Its totient is φ = 250868623104.

The previous prime is 320660321287. The next prime is 320660321339. The reversal of 320660321315 is 513123066023.

It is a cyclic number.

It is not a de Polignac number, because 320660321315 - 2⁶ = 320660321251 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27079166 + ... + 27091004.

It is an arithmetic number, because the mean of its divisors is an integer number (12292974720).

Almost surely, 2^320660321315 is an apocalyptic number.

320660321315 is a deficient number, since it is larger than the sum of its proper divisors (72714869725).

320660321315 is a wasteful number, since it uses less digits than its factorization.

320660321315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12491.

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 320660321315 its reverse (513123066023), we get a palindrome (833783387338).

The spelling of 320660321315 in words is "three hundred twenty billion, six hundred sixty million, three hundred twenty-one thousand, three hundred fifteen".