209105063908 has 24 divisors (see below), whose sum is σ = 394097551232. Its totient is φ = 96506373024.

The previous prime is 209105063899. The next prime is 209105063941. The reversal of 209105063908 is 809360501902.

It is a happy number.

209105063908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×209105063908³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1707091 + ... + 1825477.

Almost surely, 2^209105063908 is an apocalyptic number.

It is an amenable number.

209105063908 is a deficient number, since it is larger than the sum of its proper divisors (184992487324).

209105063908 is a wasteful number, since it uses less digits than its factorization.

209105063908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152371 (or 152369 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 209105063908 in words is "two hundred nine billion, one hundred five million, sixty-three thousand, nine hundred eight".