6650551556220 has 96 divisors (see below), whose sum is σ = 21877059133440. Its totient is φ = 1488235311360.

The previous prime is 6650551556219. The next prime is 6650551556273. The reversal of 6650551556220 is 226551550566.

It is a self number, because there is not a number n which added to its sum of digits gives 6650551556220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387552700 + ... + 387569859.

It is an arithmetic number, because the mean of its divisors is an integer number (227886032640).

Almost surely, 2^{6650551556220} is an apocalyptic number.

6650551556220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6650551556220 is an abundant number, since it is smaller than the sum of its proper divisors (15226507577220).

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

6650551556220 is a wasteful number, since it uses less digits than its factorization.

6650551556220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775122595 (or 775122593 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 48.

The spelling of 6650551556220 in words is "six trillion, six hundred fifty billion, five hundred fifty-one million, five hundred fifty-six thousand, two hundred twenty".