16657606211 has 4 divisors (see below), whose sum is σ = 16736552424. Its totient is φ = 16578660000.

The previous prime is 16657606159. The next prime is 16657606219. The reversal of 16657606211 is 11260675661.

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

It is a cyclic number.

It is not a de Polignac number, because 16657606211 - 2¹⁴ = 16657589827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16657606219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39472790 + ... + 39473211.

It is an arithmetic number, because the mean of its divisors is an integer number (4184138106).

Almost surely, 2^16657606211 is an apocalyptic number.

16657606211 is a deficient number, since it is larger than the sum of its proper divisors (78946213).

16657606211 is an equidigital number, since it uses as much as digits as its factorization.

16657606211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78946212.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 16657606211 in words is "sixteen billion, six hundred fifty-seven million, six hundred six thousand, two hundred eleven".