166668198485 has 16 divisors (see below), whose sum is σ = 205614792192. Its totient is φ = 129599870400.

The previous prime is 166668198467. The next prime is 166668198497. The reversal of 166668198485 is 584891866661.

166668198485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166668198485 - 2²⁸ = 166399763029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 271211 + ... + 637880.

It is an arithmetic number, because the mean of its divisors is an integer number (12850924512).

Almost surely, 2^166668198485 is an apocalyptic number.

It is an amenable number.

166668198485 is a deficient number, since it is larger than the sum of its proper divisors (38946593707).

166668198485 is an equidigital number, since it uses as much as digits as its factorization.

166668198485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910124.

The product of its digits is 119439360, while the sum is 68.

The spelling of 166668198485 in words is "one hundred sixty-six billion, six hundred sixty-eight million, one hundred ninety-eight thousand, four hundred eighty-five".