109668040818 has 96 divisors (see below), whose sum is σ = 256918334400. Its totient is φ = 31116597120.

The previous prime is 109668040813. The next prime is 109668040841. The reversal of 109668040818 is 818040866901.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109668040813) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64547733 + ... + 64549431.

It is an arithmetic number, because the mean of its divisors is an integer number (2676232650).

Almost surely, 2^109668040818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109668040818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128459167200).

109668040818 is an abundant number, since it is smaller than the sum of its proper divisors (147250293582).

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

109668040818 is a wasteful number, since it uses less digits than its factorization.

109668040818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112 (or 3105 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 109668040818 in words is "one hundred nine billion, six hundred sixty-eight million, forty thousand, eight hundred eighteen".