209080031016768 has 28 divisors (see below), whose sum is σ = 553190915399040. Its totient is φ = 69693343672192.

The previous prime is 209080031016767. The next prime is 209080031016799. The reversal of 209080031016768 is 867610130080902.

It is a self number, because there is not a number n which added to its sum of digits gives 209080031016768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209080031016767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544479247248 + ... + 544479247631.

Almost surely, 2^{209080031016768} is an apocalyptic number.

It is an amenable number.

209080031016768 is an abundant number, since it is smaller than the sum of its proper divisors (344110884382272).

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

209080031016768 is a wasteful number, since it uses less digits than its factorization.

209080031016768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088958494894 (or 1088958494884 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 209080031016768 in words is "two hundred nine trillion, eighty billion, thirty-one million, sixteen thousand, seven hundred sixty-eight".