16605066105 has 12 divisors (see below), whose sum is σ = 28782114660. Its totient is φ = 8856035232.

The previous prime is 16605066091. The next prime is 16605066109. The reversal of 16605066105 is 50166050661.

It can be written as a sum of positive squares in 2 ways, for example, as 6521693049 + 10083373056 = 80757^2 + 100416^2 .

It is not a de Polignac number, because 16605066105 - 2¹¹ = 16605064057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16605066105.

It is not an unprimeable number, because it can be changed into a prime (16605066109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184500690 + ... + 184500779.

It is an arithmetic number, because the mean of its divisors is an integer number (2398509555).

Almost surely, 2^16605066105 is an apocalyptic number.

16605066105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16605066105 is a deficient number, since it is larger than the sum of its proper divisors (12177048555).

16605066105 is a wasteful number, since it uses less digits than its factorization.

16605066105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369001480 (or 369001477 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 16605066105 in words is "sixteen billion, six hundred five million, sixty-six thousand, one hundred five".