320324666316245 has 4 divisors (see below), whose sum is σ = 384389599579500. Its totient is φ = 256259733052992.

The previous prime is 320324666316211. The next prime is 320324666316251. The reversal of 320324666316245 is 542613666423023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 232800277746436 + 87524388569809 = 15257794^2 + 9355447^2 .

It is a cyclic number.

It is not a de Polignac number, because 320324666316245 - 2³⁸ = 320049788409301 is a prime.

It is a super-2 number, since 2×320324666316245² (a number of 30 digits) contains 22 as substring.

It is a congruent 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, 32032466631620 + ... + 32032466631629.

It is an arithmetic number, because the mean of its divisors is an integer number (96097399894875).

Almost surely, 2^{320324666316245} is an apocalyptic number.

It is an amenable number.

320324666316245 is a deficient number, since it is larger than the sum of its proper divisors (64064933263255).

320324666316245 is an equidigital number, since it uses as much as digits as its factorization.

320324666316245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64064933263254.

The product of its (nonzero) digits is 22394880, while the sum is 53.

The spelling of 320324666316245 in words is "three hundred twenty trillion, three hundred twenty-four billion, six hundred sixty-six million, three hundred sixteen thousand, two hundred forty-five".