16056728011009 has 64 divisors (see below), whose sum is σ = 18945842872320. Its totient is φ = 13325920312320.

The previous prime is 16056728010997. The next prime is 16056728011013. The reversal of 16056728011009 is 90011082765061.

It is not a de Polignac number, because 16056728011009 - 2⁷ = 16056728010881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16056728011009.

It is not an unprimeable number, because it can be changed into a prime (16056728011039) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4481362432 + ... + 4481366014.

It is an arithmetic number, because the mean of its divisors is an integer number (296028794880).

Almost surely, 2^{16056728011009} is an apocalyptic number.

It is an amenable number.

16056728011009 is a deficient number, since it is larger than the sum of its proper divisors (2889114861311).

16056728011009 is a wasteful number, since it uses less digits than its factorization.

16056728011009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 16056728011009 in words is "sixteen trillion, fifty-six billion, seven hundred twenty-eight million, eleven thousand, nine".