209118944088 has 48 divisors (see below), whose sum is σ = 585893599200. Its totient is φ = 67302648000.

The previous prime is 209118944081. The next prime is 209118944143. The reversal of 209118944088 is 880449811902.

It is a happy number.

209118944088 is a `hidden beast` number, since 2 + 0 + 9 + 118 + 9 + 440 + 88 = 666.

209118944088 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209118944081) 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, 50074288 + ... + 50078463.

It is an arithmetic number, because the mean of its divisors is an integer number (12206116650).

Almost surely, 2^209118944088 is an apocalyptic number.

It is an amenable number.

209118944088 is an abundant number, since it is smaller than the sum of its proper divisors (376774655112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209118944088 is a wasteful number, since it uses less digits than its factorization.

209118944088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100152792 (or 100152785 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 54.

The spelling of 209118944088 in words is "two hundred nine billion, one hundred eighteen million, nine hundred forty-four thousand, eighty-eight".