320055242166 has 96 divisors (see below), whose sum is σ = 791422245600. Its totient is φ = 96986276640.

The previous prime is 320055242137. The next prime is 320055242173. The reversal of 320055242166 is 661242550023.

320055242166 is a `hidden beast` number, since 3 + 2 + 0 + 0 + 552 + 42 + 1 + 66 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 320055242166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 226890 + ... + 831618.

It is an arithmetic number, because the mean of its divisors is an integer number (8243981725).

Almost surely, 2^320055242166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320055242166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395711122800).

320055242166 is an abundant number, since it is smaller than the sum of its proper divisors (471367003434).

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

320055242166 is an equidigital number, since it uses as much as digits as its factorization.

320055242166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604774 (or 604745 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 320055242166 its reverse (661242550023), we get a palindrome (981297792189).

The spelling of 320055242166 in words is "three hundred twenty billion, fifty-five million, two hundred forty-two thousand, one hundred sixty-six".