66328073281171 has 8 divisors (see below), whose sum is σ = 71487422720000. Its totient is φ = 61176893836032.

The previous prime is 66328073281159. The next prime is 66328073281189. The reversal of 66328073281171 is 17118237082366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66328073281171 - 2¹⁷ = 66328073150099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66328073281111) 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, 2042481555 + ... + 2042514028.

It is an arithmetic number, because the mean of its divisors is an integer number (8935927840000).

Almost surely, 2^{66328073281171} is an apocalyptic number.

66328073281171 is a deficient number, since it is larger than the sum of its proper divisors (5159349438829).

66328073281171 is a wasteful number, since it uses less digits than its factorization.

66328073281171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4084996845.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 66328073281171 in words is "sixty-six trillion, three hundred twenty-eight billion, seventy-three million, two hundred eighty-one thousand, one hundred seventy-one".