216938593269 has 12 divisors (see below), whose sum is σ = 314041431756. Its totient is φ = 144309258432.

The previous prime is 216938593213. The next prime is 216938593303. The reversal of 216938593269 is 962395839612.

216938593269 is a `hidden beast` number, since 2 + 1 + 6 + 9 + 38 + 593 + 2 + 6 + 9 = 666.

216938593269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 206270388900 + 10668204369 = 454170^2 + 103287^2 .

It is not a de Polignac number, because 216938593269 - 2⁷ = 216938593141 is a prime.

It is a super-2 number, since 2×216938593269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216938593969) 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 in 11 ways as a sum of consecutive naturals, for example, 26368194 + ... + 26376419.

It is an arithmetic number, because the mean of its divisors is an integer number (26170119313).

Almost surely, 2^216938593269 is an apocalyptic number.

It is an amenable number.

216938593269 is a deficient number, since it is larger than the sum of its proper divisors (97102838487).

216938593269 is a wasteful number, since it uses less digits than its factorization.

216938593269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52745076 (or 52745073 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 63.

The spelling of 216938593269 in words is "two hundred sixteen billion, nine hundred thirty-eight million, five hundred ninety-three thousand, two hundred sixty-nine".