166659350471 has 4 divisors (see below), whose sum is σ = 166680542952. Its totient is φ = 166638157992.

The previous prime is 166659350411. The next prime is 166659350477. The reversal of 166659350471 is 174053956661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166659350471 is a prime.

It is a super-3 number, since 3×166659350471³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166659350477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10584440 + ... + 10600173.

It is an arithmetic number, because the mean of its divisors is an integer number (41670135738).

Almost surely, 2^166659350471 is an apocalyptic number.

166659350471 is a deficient number, since it is larger than the sum of its proper divisors (21192481).

166659350471 is an equidigital number, since it uses as much as digits as its factorization.

166659350471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21192480.

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 166659350471 in words is "one hundred sixty-six billion, six hundred fifty-nine million, three hundred fifty thousand, four hundred seventy-one".