66793946668 has 12 divisors (see below), whose sum is σ = 116936123920. Its totient is φ = 33383625552.

The previous prime is 66793946501. The next prime is 66793946717. The reversal of 66793946668 is 86664939766.

It is a super-2 number, since 2×66793946668² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66793946597 and 66793946606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3325683 + ... + 3345706.

Almost surely, 2^66793946668 is an apocalyptic number.

It is an amenable number.

66793946668 is a deficient number, since it is larger than the sum of its proper divisors (50142177252).

66793946668 is a wasteful number, since it uses less digits than its factorization.

66793946668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673896 (or 6673894 counting only the distinct ones).

The product of its digits is 423263232, while the sum is 70.

The spelling of 66793946668 in words is "sixty-six billion, seven hundred ninety-three million, nine hundred forty-six thousand, six hundred sixty-eight".