17940309305 has 16 divisors (see below), whose sum is σ = 22274241024. Its totient is φ = 13857143040.

The previous prime is 17940309269. The next prime is 17940309319. The reversal of 17940309305 is 50390304971.

It is not a de Polignac number, because 17940309305 - 2⁶ = 17940309241 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66539 + ... + 200768.

It is an arithmetic number, because the mean of its divisors is an integer number (1392140064).

Almost surely, 2^17940309305 is an apocalyptic number.

It is an amenable number.

17940309305 is a deficient number, since it is larger than the sum of its proper divisors (4333931719).

17940309305 is a wasteful number, since it uses less digits than its factorization.

17940309305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267776.

The product of its (nonzero) digits is 102060, while the sum is 41.

The spelling of 17940309305 in words is "seventeen billion, nine hundred forty million, three hundred nine thousand, three hundred five".