109609173888 has 256 divisors, whose sum is σ = 322495603200. Its totient is φ = 32808697856.

The previous prime is 109609173827. The next prime is 109609173941. The reversal of 109609173888 is 888371906901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85431295 + ... + 85432577.

It is an arithmetic number, because the mean of its divisors is an integer number (1259748450).

Almost surely, 2^109609173888 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 109609173888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161247801600).

109609173888 is an abundant number, since it is smaller than the sum of its proper divisors (212886429312).

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

109609173888 is a wasteful number, since it uses less digits than its factorization.

109609173888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909 (or 1897 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 60.

The spelling of 109609173888 in words is "one hundred nine billion, six hundred nine million, one hundred seventy-three thousand, eight hundred eighty-eight".