166605103326 has 16 divisors (see below), whose sum is σ = 333275616000. Its totient is φ = 55524132888.

The previous prime is 166605103319. The next prime is 166605103333. The reversal of 166605103326 is 623301506661.

It is a happy number.

166605103326 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166605103319) and next prime (166605103333).

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 7 ways as a sum of consecutive naturals, for example, 2692246 + ... + 2753433.

It is an arithmetic number, because the mean of its divisors is an integer number (20829726000).

Almost surely, 2^166605103326 is an apocalyptic number.

166605103326 is an abundant number, since it is smaller than the sum of its proper divisors (166670512674).

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

166605103326 is a wasteful number, since it uses less digits than its factorization.

166605103326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450783.

The product of its (nonzero) digits is 116640, while the sum is 39.

Adding to 166605103326 its reverse (623301506661), we get a palindrome (789906609987).

The spelling of 166605103326 in words is "one hundred sixty-six billion, six hundred five million, one hundred three thousand, three hundred twenty-six".