8169661500940 has 96 divisors (see below), whose sum is σ = 18096102662400. Its totient is φ = 3089558142720.

The previous prime is 8169661500893. The next prime is 8169661500977. The reversal of 8169661500940 is 490051669618.

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, 1117750006 + ... + 1117757314.

It is an arithmetic number, because the mean of its divisors is an integer number (188501069400).

Almost surely, 2^{8169661500940} 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 8169661500940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9048051331200).

8169661500940 is an abundant number, since it is smaller than the sum of its proper divisors (9926441161460).

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

8169661500940 is a wasteful number, since it uses less digits than its factorization.

8169661500940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12935 (or 12933 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 8169661500940 in words is "eight trillion, one hundred sixty-nine billion, six hundred sixty-one million, five hundred thousand, nine hundred forty".