6680492238666 has 16 divisors (see below), whose sum is σ = 13404505603104. Its totient is φ = 2219577225264.

The previous prime is 6680492238613. The next prime is 6680492238671. The reversal of 6680492238666 is 6668322940866.

It is a junction number, because it is equal to n+sod(n) for n = 6680492238597 and 6680492238606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1813378245 + ... + 1813381928.

It is an arithmetic number, because the mean of its divisors is an integer number (837781600194).

Almost surely, 2^{6680492238666} is an apocalyptic number.

6680492238666 is an abundant number, since it is smaller than the sum of its proper divisors (6724013364438).

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

6680492238666 is a wasteful number, since it uses less digits than its factorization.

6680492238666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3626760485.

The product of its (nonzero) digits is 214990848, while the sum is 66.

The spelling of 6680492238666 in words is "six trillion, six hundred eighty billion, four hundred ninety-two million, two hundred thirty-eight thousand, six hundred sixty-six".