216278759329 has 2 divisors, whose sum is σ = 216278759330. Its totient is φ = 216278759328.

The previous prime is 216278759287. The next prime is 216278759341. The reversal of 216278759329 is 923957872612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182944398400 + 33334360929 = 427720^2 + 182577^2 .

It is a cyclic number.

It is not a de Polignac number, because 216278759329 - 2³³ = 207688824737 is a prime.

It is not a weakly prime, because it can be changed into another prime (216278759369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108139379664 + 108139379665.

It is an arithmetic number, because the mean of its divisors is an integer number (108139379665).

Almost surely, 2^216278759329 is an apocalyptic number.

It is an amenable number.

216278759329 is a deficient number, since it is larger than the sum of its proper divisors (1).

216278759329 is an equidigital number, since it uses as much as digits as its factorization.

216278759329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 61.

The spelling of 216278759329 in words is "two hundred sixteen billion, two hundred seventy-eight million, seven hundred fifty-nine thousand, three hundred twenty-nine".