6520055216216 has 8 divisors (see below), whose sum is σ = 12225103530420. Its totient is φ = 3260027608104.

The previous prime is 6520055216161. The next prime is 6520055216237. The reversal of 6520055216216 is 6126125500256.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×6520055216216² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407503451006 + ... + 407503451021.

Almost surely, 2^{6520055216216} is an apocalyptic number.

It is an amenable number.

6520055216216 is a deficient number, since it is larger than the sum of its proper divisors (5705048314204).

6520055216216 is a wasteful number, since it uses less digits than its factorization.

6520055216216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815006902033 (or 815006902029 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 6520055216216 in words is "six trillion, five hundred twenty billion, fifty-five million, two hundred sixteen thousand, two hundred sixteen".