66163968233612 has 24 divisors (see below), whose sum is σ = 116137134792000. Its totient is φ = 32982079844736.

The previous prime is 66163968233569. The next prime is 66163968233617. The reversal of 66163968233612 is 21633286936166.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66163968233617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17001737 + ... + 20527712.

It is an arithmetic number, because the mean of its divisors is an integer number (4839047283000).

Almost surely, 2^{66163968233612} is an apocalyptic number.

It is an amenable number.

66163968233612 is a deficient number, since it is larger than the sum of its proper divisors (49973166558388).

66163968233612 is a wasteful number, since it uses less digits than its factorization.

66163968233612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37530785 (or 37530783 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 62.

The spelling of 66163968233612 in words is "sixty-six trillion, one hundred sixty-three billion, nine hundred sixty-eight million, two hundred thirty-three thousand, six hundred twelve".