216839629073 has 2 divisors, whose sum is σ = 216839629074. Its totient is φ = 216839629072.

The previous prime is 216839629067. The next prime is 216839629087. The reversal of 216839629073 is 370926938612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153230753809 + 63608875264 = 391447^2 + 252208^2 .

It is a cyclic number.

It is not a de Polignac number, because 216839629073 - 2³⁶ = 148120152337 is a prime.

It is not a weakly prime, because it can be changed into another prime (216839629373) 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, 108419814536 + 108419814537.

It is an arithmetic number, because the mean of its divisors is an integer number (108419814537).

Almost surely, 2^216839629073 is an apocalyptic number.

It is an amenable number.

216839629073 is a deficient number, since it is larger than the sum of its proper divisors (1).

216839629073 is an equidigital number, since it uses as much as digits as its factorization.

216839629073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 216839629073 in words is "two hundred sixteen billion, eight hundred thirty-nine million, six hundred twenty-nine thousand, seventy-three".