6666737340668 has 24 divisors (see below), whose sum is σ = 11686715124000. Its totient is φ = 3327676305408.

The previous prime is 6666737340667. The next prime is 6666737340821. The reversal of 6666737340668 is 8660437376666.

It is a super-3 number, since 3×6666737340668³ (a number of 39 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6666737340598 and 6666737340607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666737340667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109459568 + ... + 109520456.

It is an arithmetic number, because the mean of its divisors is an integer number (486946463500).

Almost surely, 2^{6666737340668} is an apocalyptic number.

It is an amenable number.

6666737340668 is a deficient number, since it is larger than the sum of its proper divisors (5019977783332).

6666737340668 is a wasteful number, since it uses less digits than its factorization.

6666737340668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107189 (or 107187 counting only the distinct ones).

The product of its (nonzero) digits is 658409472, while the sum is 68.

The spelling of 6666737340668 in words is "six trillion, six hundred sixty-six billion, seven hundred thirty-seven million, three hundred forty thousand, six hundred sixty-eight".