209673716676 has 48 divisors (see below), whose sum is σ = 504799147776. Its totient is φ = 67698975744.

The previous prime is 209673716671. The next prime is 209673716683. The reversal of 209673716676 is 676617376902.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (209673716671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1861591 + ... + 1971006.

It is an arithmetic number, because the mean of its divisors is an integer number (10516648912).

Almost surely, 2^209673716676 is an apocalyptic number.

It is an amenable number.

209673716676 is an abundant number, since it is smaller than the sum of its proper divisors (295125431100).

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

209673716676 is a wasteful number, since it uses less digits than its factorization.

209673716676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3832748 (or 3832746 counting only the distinct ones).

The product of its (nonzero) digits is 24004512, while the sum is 60.

The spelling of 209673716676 in words is "two hundred nine billion, six hundred seventy-three million, seven hundred sixteen thousand, six hundred seventy-six".