66500658271 has 8 divisors (see below), whose sum is σ = 66722312160. Its totient is φ = 66279063552.

The previous prime is 66500658229. The next prime is 66500658283. The reversal of 66500658271 is 17285600566.

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

It is a cyclic number.

It is not a de Polignac number, because 66500658271 - 2¹¹ = 66500656223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66500658971) 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, 4158990 + ... + 4174948.

It is an arithmetic number, because the mean of its divisors is an integer number (8340289020).

Almost surely, 2^66500658271 is an apocalyptic number.

66500658271 is a deficient number, since it is larger than the sum of its proper divisors (221653889).

66500658271 is a wasteful number, since it uses less digits than its factorization.

66500658271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29585.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 66500658271 in words is "sixty-six billion, five hundred million, six hundred fifty-eight thousand, two hundred seventy-one".