219896259889 has 2 divisors, whose sum is σ = 219896259890. Its totient is φ = 219896259888.

The previous prime is 219896259839. The next prime is 219896259923. The reversal of 219896259889 is 988952698912.

219896259889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181724869264 + 38171390625 = 426292^2 + 195375^2 .

It is a cyclic number.

It is not a de Polignac number, because 219896259889 - 2³¹ = 217748776241 is a prime.

It is a super-2 number, since 2×219896259889² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (219896259839) 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, 109948129944 + 109948129945.

It is an arithmetic number, because the mean of its divisors is an integer number (109948129945).

Almost surely, 2^219896259889 is an apocalyptic number.

It is an amenable number.

219896259889 is a deficient number, since it is larger than the sum of its proper divisors (1).

219896259889 is an equidigital number, since it uses as much as digits as its factorization.

219896259889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403107840, while the sum is 76.

The spelling of 219896259889 in words is "two hundred nineteen billion, eight hundred ninety-six million, two hundred fifty-nine thousand, eight hundred eighty-nine".