16606228585 has 4 divisors (see below), whose sum is σ = 19927474308. Its totient is φ = 13284982864.

The previous prime is 16606228579. The next prime is 16606228621. The reversal of 16606228585 is 58582260661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4538986384 + 12067242201 = 67372^2 + 109851^2 .

It is a cyclic number.

It is not a de Polignac number, because 16606228585 - 2³ = 16606228577 is a prime.

It is a super-2 number, since 2×16606228585² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1660622854 + ... + 1660622863.

It is an arithmetic number, because the mean of its divisors is an integer number (4981868577).

Almost surely, 2^16606228585 is an apocalyptic number.

It is an amenable number.

16606228585 is a deficient number, since it is larger than the sum of its proper divisors (3321245723).

16606228585 is an equidigital number, since it uses as much as digits as its factorization.

16606228585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3321245722.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 16606228585 in words is "sixteen billion, six hundred six million, two hundred twenty-eight thousand, five hundred eighty-five".