208872911808 has 336 divisors, whose sum is σ = 667161492192. Its totient is φ = 61940736000.

The previous prime is 208872911801. The next prime is 208872911809. The reversal of 208872911808 is 808119278802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208872911801) 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 in 47 ways as a sum of consecutive naturals, for example, 221968618 + ... + 221969558.

Almost surely, 2^208872911808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 208872911808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333580746096).

208872911808 is an abundant number, since it is smaller than the sum of its proper divisors (458288580384).

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

208872911808 is a wasteful number, since it uses less digits than its factorization.

208872911808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684 (or 1671 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 54.

The spelling of 208872911808 in words is "two hundred eight billion, eight hundred seventy-two million, nine hundred eleven thousand, eight hundred eight".