6681527520520 has 32 divisors (see below), whose sum is σ = 15081775974720. Its totient is φ = 2664017398720.

The previous prime is 6681527520511. The next prime is 6681527520539. The reversal of 6681527520520 is 250257251866.

It is a super-2 number, since 2×6681527520520² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268537702 + ... + 268562581.

It is an arithmetic number, because the mean of its divisors is an integer number (471305499210).

Almost surely, 2^{6681527520520} is an apocalyptic number.

It is an amenable number.

6681527520520 is an abundant number, since it is smaller than the sum of its proper divisors (8400248454200).

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

6681527520520 is a wasteful number, since it uses less digits than its factorization.

6681527520520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537100605 (or 537100601 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 6681527520520 in words is "six trillion, six hundred eighty-one billion, five hundred twenty-seven million, five hundred twenty thousand, five hundred twenty".