6650565605220 has 24 divisors (see below), whose sum is σ = 18621583694784. Its totient is φ = 1773484161376.

The previous prime is 6650565605197. The next prime is 6650565605237. The reversal of 6650565605220 is 225065650566.

It is a self number, because there is not a number n which added to its sum of digits gives 6650565605220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55421379984 + ... + 55421380103.

It is an arithmetic number, because the mean of its divisors is an integer number (775899320616).

Almost surely, 2^{6650565605220} is an apocalyptic number.

6650565605220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6650565605220 is an abundant number, since it is smaller than the sum of its proper divisors (11971018089564).

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

6650565605220 is a wasteful number, since it uses less digits than its factorization.

6650565605220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110842760099 (or 110842760097 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 6650565605220 in words is "six trillion, six hundred fifty billion, five hundred sixty-five million, six hundred five thousand, two hundred twenty".