6648520216 has 32 divisors (see below), whose sum is σ = 13485144960. Its totient is φ = 3054776832.

The previous prime is 6648520211. The next prime is 6648520217. The reversal of 6648520216 is 6120258466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648520211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120145 + ... + 166528.

It is an arithmetic number, because the mean of its divisors is an integer number (421410780).

Almost surely, 2^6648520216 is an apocalyptic number.

It is an amenable number.

6648520216 is an abundant number, since it is smaller than the sum of its proper divisors (6836624744).

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

6648520216 is a wasteful number, since it uses less digits than its factorization.

6648520216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286915 (or 286911 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 6648520216 is about 81538.4585088534. The cubic root of 6648520216 is about 1880.3628596414.

The spelling of 6648520216 in words is "six billion, six hundred forty-eight million, five hundred twenty thousand, two hundred sixteen".