16944266865 has 32 divisors (see below), whose sum is σ = 28335764736. Its totient is φ = 8629913600.

The previous prime is 16944266851. The next prime is 16944266873. The reversal of 16944266865 is 56866244961.

It is not a de Polignac number, because 16944266865 - 2⁸ = 16944266609 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173065 + ... + 252665.

It is an arithmetic number, because the mean of its divisors is an integer number (885492648).

Almost surely, 2^16944266865 is an apocalyptic number.

16944266865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16944266865 is a deficient number, since it is larger than the sum of its proper divisors (11391497871).

16944266865 is a wasteful number, since it uses less digits than its factorization.

16944266865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80249.

The product of its digits is 14929920, while the sum is 57.

The spelling of 16944266865 in words is "sixteen billion, nine hundred forty-four million, two hundred sixty-six thousand, eight hundred sixty-five".