666006504535171 has 8 divisors (see below), whose sum is σ = 667627113504960. Its totient is φ = 664386275693952.

The previous prime is 666006504535123. The next prime is 666006504535189. The reversal of 666006504535171 is 171535405600666.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666006504535171 is a prime.

It is a super-3 number, since 3×666006504535171³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666006504535121) 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, 91523611 + ... + 98532148.

It is an arithmetic number, because the mean of its divisors is an integer number (83453389188120).

Almost surely, 2^{666006504535171} is an apocalyptic number.

666006504535171 is a deficient number, since it is larger than the sum of its proper divisors (1620608969789).

666006504535171 is a wasteful number, since it uses less digits than its factorization.

666006504535171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190064285.

The product of its (nonzero) digits is 13608000, while the sum is 55.

The spelling of 666006504535171 in words is "six hundred sixty-six trillion, six billion, five hundred four million, five hundred thirty-five thousand, one hundred seventy-one".