6650220556506 has 32 divisors (see below), whose sum is σ = 13314504960000. Its totient is φ = 2214397126656.

The previous prime is 6650220556501. The next prime is 6650220556607. The reversal of 6650220556506 is 6056550220566.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6650220556501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29616850 + ... + 29840546.

It is an arithmetic number, because the mean of its divisors is an integer number (416078280000).

Almost surely, 2^{6650220556506} is an apocalyptic number.

6650220556506 is an abundant number, since it is smaller than the sum of its proper divisors (6664284403494).

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

6650220556506 is a wasteful number, since it uses less digits than its factorization.

6650220556506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228918.

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

The spelling of 6650220556506 in words is "six trillion, six hundred fifty billion, two hundred twenty million, five hundred fifty-six thousand, five hundred six".