66717644012332 has 12 divisors (see below), whose sum is σ = 117056020667040. Its totient is φ = 33273066678896.

The previous prime is 66717644012207. The next prime is 66717644012359. The reversal of 66717644012332 is 23321044671766.

It is a self number, because there is not a number n which added to its sum of digits gives 66717644012332.

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, 21438830068 + ... + 21438833179.

It is an arithmetic number, because the mean of its divisors is an integer number (9754668388920).

Almost surely, 2^{66717644012332} is an apocalyptic number.

It is an amenable number.

66717644012332 is a deficient number, since it is larger than the sum of its proper divisors (50338376654708).

66717644012332 is a wasteful number, since it uses less digits than its factorization.

66717644012332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42877663640 (or 42877663638 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 52.

The spelling of 66717644012332 in words is "sixty-six trillion, seven hundred seventeen billion, six hundred forty-four million, twelve thousand, three hundred thirty-two".