6680691688500 has 384 divisors, whose sum is σ = 22618792734720. Its totient is φ = 1700424576000.

The previous prime is 6680691688499. The next prime is 6680691688597. The reversal of 6680691688500 is 58861960866.

6680691688500 is a `hidden beast` number, since 6 + 6 + 8 + 0 + 69 + 1 + 68 + 8 + 500 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 30441162 + ... + 30659838.

It is an arithmetic number, because the mean of its divisors is an integer number (58903106080).

Almost surely, 2^{6680691688500} is an apocalyptic number.

6680691688500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6680691688500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11309396367360).

6680691688500 is an abundant number, since it is smaller than the sum of its proper divisors (15938101046220).

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

6680691688500 is a wasteful number, since it uses less digits than its factorization.

6680691688500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218809 (or 218791 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The spelling of 6680691688500 in words is "six trillion, six hundred eighty billion, six hundred ninety-one million, six hundred eighty-eight thousand, five hundred".