6520055216208 has 40 divisors (see below), whose sum is σ = 16846228486656. Its totient is φ = 2172996576000.

The previous prime is 6520055216161. The next prime is 6520055216237. The reversal of 6520055216208 is 8026125500256.

It is a super-2 number, since 2×6520055216208² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6520055216208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10801968 + ... + 11389583.

Almost surely, 2^{6520055216208} is an apocalyptic number.

It is an amenable number.

6520055216208 is an abundant number, since it is smaller than the sum of its proper divisors (10326173270448).

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

6520055216208 is a wasteful number, since it uses less digits than its factorization.

6520055216208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22197683 (or 22197677 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 6520055216208 in words is "six trillion, five hundred twenty billion, fifty-five million, two hundred sixteen thousand, two hundred eight".