16729965305 has 4 divisors (see below), whose sum is σ = 20075958372. Its totient is φ = 13383972240.

The previous prime is 16729965281. The next prime is 16729965337. The reversal of 16729965305 is 50356992761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2670408976 + 14059556329 = 51676^2 + 118573^2 .

It is not a de Polignac number, because 16729965305 - 2³⁰ = 15656223481 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 1672996526 + ... + 1672996535.

It is an arithmetic number, because the mean of its divisors is an integer number (5018989593).

Almost surely, 2^16729965305 is an apocalyptic number.

It is an amenable number.

16729965305 is a deficient number, since it is larger than the sum of its proper divisors (3345993067).

16729965305 is an equidigital number, since it uses as much as digits as its factorization.

16729965305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3345993066.

The product of its (nonzero) digits is 3061800, while the sum is 53.

The spelling of 16729965305 in words is "sixteen billion, seven hundred twenty-nine million, nine hundred sixty-five thousand, three hundred five".