320020616160 has 864 divisors, whose sum is σ = 1308466897920. Its totient is φ = 69720090624.

The previous prime is 320020616147. The next prime is 320020616171. The reversal of 320020616160 is 61616020023.

320020616160 is a `hidden beast` number, since 3 + 20 + 0 + 20 + 6 + 1 + 616 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2990846827 + ... + 2990846933.

It is an arithmetic number, because the mean of its divisors is an integer number (1514429280).

Almost surely, 2^320020616160 is an apocalyptic number.

320020616160 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320020616160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654233448960).

320020616160 is an abundant number, since it is smaller than the sum of its proper divisors (988446281760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320020616160 is a wasteful number, since it uses less digits than its factorization.

320020616160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 320020616160 its reverse (61616020023), we get a palindrome (381636636183).

The spelling of 320020616160 in words is "three hundred twenty billion, twenty million, six hundred sixteen thousand, one hundred sixty".