16616213611 has 4 divisors (see below), whose sum is σ = 16709041800. Its totient is φ = 16523385424.

The previous prime is 16616213599. The next prime is 16616213617. The reversal of 16616213611 is 11631261661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11631261661 = 29873 ⋅389357.

It is a cyclic number.

It is not a de Polignac number, because 16616213611 - 2¹⁵ = 16616180843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16616213617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46413826 + ... + 46414183.

It is an arithmetic number, because the mean of its divisors is an integer number (4177260450).

Almost surely, 2^16616213611 is an apocalyptic number.

16616213611 is a deficient number, since it is larger than the sum of its proper divisors (92828189).

16616213611 is an equidigital number, since it uses as much as digits as its factorization.

16616213611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92828188.

The product of its digits is 7776, while the sum is 34.

The spelling of 16616213611 in words is "sixteen billion, six hundred sixteen million, two hundred thirteen thousand, six hundred eleven".