16556016560045 has 8 divisors (see below), whose sum is σ = 19876822214040. Its totient is φ = 13238411686720.

The previous prime is 16556016560029. The next prime is 16556016560093. The reversal of 16556016560045 is 54006561065561.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 785992179844 + 15770024380201 = 886562^2 + 3971149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16556016560045 - 2⁴ = 16556016560029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16556016559975 and 16556016560002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800183786 + ... + 800204475.

It is an arithmetic number, because the mean of its divisors is an integer number (2484602776755).

Almost surely, 2^{16556016560045} is an apocalyptic number.

It is an amenable number.

16556016560045 is a deficient number, since it is larger than the sum of its proper divisors (3320805653995).

16556016560045 is a wasteful number, since it uses less digits than its factorization.

16556016560045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600390335.

The product of its (nonzero) digits is 3240000, while the sum is 50.

The spelling of 16556016560045 in words is "sixteen trillion, five hundred fifty-six billion, sixteen million, five hundred sixty thousand, forty-five".