66660501106606 has 24 divisors (see below), whose sum is σ = 109916709400512. Its totient is φ = 30297603336000.

The previous prime is 66660501106553. The next prime is 66660501106631. The reversal of 66660501106606 is 60660110506666.

It is a self number, because there is not a number n which added to its sum of digits gives 66660501106606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9128155 + ... + 14718838.

It is an arithmetic number, because the mean of its divisors is an integer number (4579862891688).

Almost surely, 2^{66660501106606} is an apocalyptic number.

66660501106606 is a deficient number, since it is larger than the sum of its proper divisors (43256208293906).

66660501106606 is a wasteful number, since it uses less digits than its factorization.

66660501106606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23858568 (or 23858557 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 66660501106606 in words is "sixty-six trillion, six hundred sixty billion, five hundred one million, one hundred six thousand, six hundred six".