6680815823682 has 144 divisors (see below), whose sum is σ = 19541887530048. Its totient is φ = 1601793947520.

The previous prime is 6680815823663. The next prime is 6680815823729. The reversal of 6680815823682 is 2863285180866.

It is a super-2 number, since 2×6680815823682² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14026753 + ... + 14495220.

It is an arithmetic number, because the mean of its divisors is an integer number (135707552292).

Almost surely, 2^{6680815823682} is an apocalyptic number.

6680815823682 is an abundant number, since it is smaller than the sum of its proper divisors (12861071706366).

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

6680815823682 is a wasteful number, since it uses less digits than its factorization.

6680815823682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28522025 (or 28522009 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 63.

The spelling of 6680815823682 in words is "six trillion, six hundred eighty billion, eight hundred fifteen million, eight hundred twenty-three thousand, six hundred eighty-two".