220166660308 has 24 divisors (see below), whose sum is σ = 440585469632. Its totient is φ = 94303108224.

The previous prime is 220166660257. The next prime is 220166660317. The reversal of 220166660308 is 803066661022.

It is a happy number.

It is a super-2 number, since 2×220166660308² (a number of 23 digits) contains 22 as substring.

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, 2201541 + ... + 2299372.

Almost surely, 2^220166660308 is an apocalyptic number.

220166660308 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

220166660308 is an abundant number, since it is smaller than the sum of its proper divisors (220418809324).

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

220166660308 is a wasteful number, since it uses less digits than its factorization.

220166660308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4502671 (or 4502669 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 220166660308 in words is "two hundred twenty billion, one hundred sixty-six million, six hundred sixty thousand, three hundred eight".