16728660432019 has 2 divisors, whose sum is σ = 16728660432020. Its totient is φ = 16728660432018.

The previous prime is 16728660431999. The next prime is 16728660432079. The reversal of 16728660432019 is 91023406682761.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16728660432019 is a prime.

It is a super-2 number, since 2×16728660432019² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16728660432079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8364330216009 + 8364330216010.

It is an arithmetic number, because the mean of its divisors is an integer number (8364330216010).

Almost surely, 2^{16728660432019} is an apocalyptic number.

16728660432019 is a deficient number, since it is larger than the sum of its proper divisors (1).

16728660432019 is an equidigital number, since it uses as much as digits as its factorization.

16728660432019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 16728660432019 in words is "sixteen trillion, seven hundred twenty-eight billion, six hundred sixty million, four hundred thirty-two thousand, nineteen".