166488251946 has 8 divisors (see below), whose sum is σ = 332976503904. Its totient is φ = 55496083980.

The previous prime is 166488251893. The next prime is 166488251953. The reversal of 166488251946 is 649152884661.

166488251946 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

166488251946 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 166488251946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13874020990 + ... + 13874021001.

It is an arithmetic number, because the mean of its divisors is an integer number (41622062988).

Almost surely, 2^166488251946 is an apocalyptic number.

166488251946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166488251946 is a wasteful number, since it uses less digits than its factorization.

166488251946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27748041996.

The product of its digits is 19906560, while the sum is 60.

The spelling of 166488251946 in words is "one hundred sixty-six billion, four hundred eighty-eight million, two hundred fifty-one thousand, nine hundred forty-six".