16712131181 has 2 divisors, whose sum is σ = 16712131182. Its totient is φ = 16712131180.

The previous prime is 16712131153. The next prime is 16712131211. The reversal of 16712131181 is 18113121761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10456903081 + 6255228100 = 102259^2 + 79090^2 .

It is a cyclic number.

It is not a de Polignac number, because 16712131181 - 2¹⁰ = 16712130157 is a prime.

It is a super-2 number, since 2×16712131181² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16712131781) 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 as a sum of consecutive naturals, namely, 8356065590 + 8356065591.

It is an arithmetic number, because the mean of its divisors is an integer number (8356065591).

Almost surely, 2^16712131181 is an apocalyptic number.

It is an amenable number.

16712131181 is a deficient number, since it is larger than the sum of its proper divisors (1).

16712131181 is an equidigital number, since it uses as much as digits as its factorization.

16712131181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 32.

The spelling of 16712131181 in words is "sixteen billion, seven hundred twelve million, one hundred thirty-one thousand, one hundred eighty-one".