6660500520520 has 128 divisors (see below), whose sum is σ = 18684927072000. Its totient is φ = 2075897318400.

The previous prime is 6660500520511. The next prime is 6660500520521. The reversal of 6660500520520 is 250250050666.

It is a self number, because there is not a number n which added to its sum of digits gives 6660500520520.

It is not an unprimeable number, because it can be changed into a prime (6660500520521) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 83061406 + ... + 83141554.

It is an arithmetic number, because the mean of its divisors is an integer number (145975992750).

Almost surely, 2^{6660500520520} is an apocalyptic number.

It is an amenable number.

6660500520520 is an abundant number, since it is smaller than the sum of its proper divisors (12024426551480).

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

6660500520520 is a wasteful number, since it uses less digits than its factorization.

6660500520520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107159 (or 107155 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 6660500520520 in words is "six trillion, six hundred sixty billion, five hundred million, five hundred twenty thousand, five hundred twenty".