166730472563 has 8 divisors (see below), whose sum is σ = 174023797248. Its totient is φ = 159440829064.

The previous prime is 166730472553. The next prime is 166730472577. The reversal of 166730472563 is 365274037661.

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 166730472563 - 2⁶ = 166730472499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166730472533) 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, 827531 + ... + 1009092.

It is an arithmetic number, because the mean of its divisors is an integer number (21752974656).

Almost surely, 2^166730472563 is an apocalyptic number.

166730472563 is a deficient number, since it is larger than the sum of its proper divisors (7293324685).

166730472563 is a wasteful number, since it uses less digits than its factorization.

166730472563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840593.

The product of its (nonzero) digits is 3810240, while the sum is 50.

The spelling of 166730472563 in words is "one hundred sixty-six billion, seven hundred thirty million, four hundred seventy-two thousand, five hundred sixty-three".