16728145863 has 16 divisors (see below), whose sum is σ = 26203529856. Its totient is φ = 9358403040.

The previous prime is 16728145853. The next prime is 16728145871. The reversal of 16728145863 is 36854182761.

It is not a de Polignac number, because 16728145863 - 2⁵ = 16728145831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16728145853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19496245 + ... + 19497102.

It is an arithmetic number, because the mean of its divisors is an integer number (1637720616).

Almost surely, 2^16728145863 is an apocalyptic number.

16728145863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16728145863 is a deficient number, since it is larger than the sum of its proper divisors (9475383993).

16728145863 is a wasteful number, since it uses less digits than its factorization.

16728145863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38993374.

The product of its digits is 1935360, while the sum is 51.

The spelling of 16728145863 in words is "sixteen billion, seven hundred twenty-eight million, one hundred forty-five thousand, eight hundred sixty-three".