216134066669 has 2 divisors, whose sum is σ = 216134066670. Its totient is φ = 216134066668.

The previous prime is 216134066639. The next prime is 216134066683. The reversal of 216134066669 is 966660431612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179428488100 + 36705578569 = 423590^2 + 191587^2 .

It is a cyclic number.

It is not a de Polignac number, because 216134066669 - 2⁸ = 216134066413 is a prime.

It is a super-2 number, since 2×216134066669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216134066639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108067033334 + 108067033335.

It is an arithmetic number, because the mean of its divisors is an integer number (108067033335).

Almost surely, 2^216134066669 is an apocalyptic number.

It is an amenable number.

216134066669 is a deficient number, since it is larger than the sum of its proper divisors (1).

216134066669 is an equidigital number, since it uses as much as digits as its factorization.

216134066669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 50.

The spelling of 216134066669 in words is "two hundred sixteen billion, one hundred thirty-four million, sixty-six thousand, six hundred sixty-nine".