16728729332803 has 2 divisors, whose sum is σ = 16728729332804. Its totient is φ = 16728729332802.

The previous prime is 16728729332789. The next prime is 16728729332807. The reversal of 16728729332803 is 30823392782761.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (30823392782761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16728729332803 - 2⁹ = 16728729332291 is a prime.

It is not a weakly prime, because it can be changed into another prime (16728729332807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8364364666401 + 8364364666402.

It is an arithmetic number, because the mean of its divisors is an integer number (8364364666402).

Almost surely, 2^{16728729332803} is an apocalyptic number.

16728729332803 is a deficient number, since it is larger than the sum of its proper divisors (1).

16728729332803 is an equidigital number, since it uses as much as digits as its factorization.

16728729332803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36578304, while the sum is 61.

The spelling of 16728729332803 in words is "sixteen trillion, seven hundred twenty-eight billion, seven hundred twenty-nine million, three hundred thirty-two thousand, eight hundred three".