16676411561 has 2 divisors, whose sum is σ = 16676411562. Its totient is φ = 16676411560.

The previous prime is 16676411551. The next prime is 16676411569. The reversal of 16676411561 is 16511467661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10051265536 + 6625146025 = 100256^2 + 81395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16676411561 is a prime.

It is not a weakly prime, because it can be changed into another prime (16676411569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8338205780 + 8338205781.

It is an arithmetic number, because the mean of its divisors is an integer number (8338205781).

Almost surely, 2^16676411561 is an apocalyptic number.

It is an amenable number.

16676411561 is a deficient number, since it is larger than the sum of its proper divisors (1).

16676411561 is an equidigital number, since it uses as much as digits as its factorization.

16676411561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The spelling of 16676411561 in words is "sixteen billion, six hundred seventy-six million, four hundred eleven thousand, five hundred sixty-one".