166899842259 has 16 divisors (see below), whose sum is σ = 225544217472. Its totient is φ = 109764942848.

The previous prime is 166899842227. The next prime is 166899842267. The reversal of 166899842259 is 952248998661.

166899842259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 166899842259 - 2⁵ = 166899842227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166899842193 and 166899842202.

It is not an unprimeable number, because it can be changed into a prime (166899842269) by changing a digit.

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, 320622 + ... + 660755.

It is an arithmetic number, because the mean of its divisors is an integer number (14096513592).

Almost surely, 2^166899842259 is an apocalyptic number.

166899842259 is a deficient number, since it is larger than the sum of its proper divisors (58644375213).

166899842259 is an equidigital number, since it uses as much as digits as its factorization.

166899842259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982146.

The product of its digits is 134369280, while the sum is 69.

The spelling of 166899842259 in words is "one hundred sixty-six billion, eight hundred ninety-nine million, eight hundred forty-two thousand, two hundred fifty-nine".