166500003049728 has 108 divisors (see below), whose sum is σ = 449845467891120. Its totient is φ = 54671641660416.

The previous prime is 166500003049691. The next prime is 166500003049729. The reversal of 166500003049728 is 827940300005661.

It is not an unprimeable number, because it can be changed into a prime (166500003049729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20700018 + ... + 27595121.

It is a 1-persistent number, because it is pandigital, but 2⋅166500003049728 = 333000006099456 is not.

Almost surely, 2^{166500003049728} is an apocalyptic number.

It is an amenable number.

166500003049728 is an abundant number, since it is smaller than the sum of its proper divisors (283345464841392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166500003049728 is an frugal number, since it uses more digits than its factorization.

166500003049728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48295292 (or 48295211 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 166500003049728 in words is "one hundred sixty-six trillion, five hundred billion, three million, forty-nine thousand, seven hundred twenty-eight".