320662145673 has 24 divisors (see below), whose sum is σ = 483492072960. Its totient is φ = 204554306880.

The previous prime is 320662145659. The next prime is 320662145717. The reversal of 320662145673 is 376541266023.

320662145673 is a `hidden beast` number, since 3 + 2 + 0 + 66 + 21 + 4 + 567 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-320662145673 is a prime.

It is a super-2 number, since 2×320662145673² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320662145603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6432061 + ... + 6481722.

It is an arithmetic number, because the mean of its divisors is an integer number (20145503040).

Almost surely, 2^320662145673 is an apocalyptic number.

It is an amenable number.

320662145673 is a deficient number, since it is larger than the sum of its proper divisors (162829927287).

320662145673 is a wasteful number, since it uses less digits than its factorization.

320662145673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12913909 (or 12913906 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 320662145673 in words is "three hundred twenty billion, six hundred sixty-two million, one hundred forty-five thousand, six hundred seventy-three".