16135131164209 has 2 divisors, whose sum is σ = 16135131164210. Its totient is φ = 16135131164208.

The previous prime is 16135131164161. The next prime is 16135131164219. The reversal of 16135131164209 is 90246113153161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15365835525184 + 769295639025 = 3919928^2 + 877095^2 .

It is a cyclic number.

It is not a de Polignac number, because 16135131164209 - 2¹⁷ = 16135131033137 is a prime.

It is not a weakly prime, because it can be changed into another prime (16135131164219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8067565582104 + 8067565582105.

It is an arithmetic number, because the mean of its divisors is an integer number (8067565582105).

Almost surely, 2^{16135131164209} is an apocalyptic number.

It is an amenable number.

16135131164209 is a deficient number, since it is larger than the sum of its proper divisors (1).

16135131164209 is an equidigital number, since it uses as much as digits as its factorization.

16135131164209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 16135131164209 in words is "sixteen trillion, one hundred thirty-five billion, one hundred thirty-one million, one hundred sixty-four thousand, two hundred nine".