8717199697640 has 128 divisors (see below), whose sum is σ = 22650894604800. Its totient is φ = 2957400391680.

The previous prime is 8717199697637. The next prime is 8717199697727. The reversal of 8717199697640 is 467969917178.

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, 165350885 + ... + 165403595.

It is an arithmetic number, because the mean of its divisors is an integer number (176960114100).

Almost surely, 2^{8717199697640} 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 8717199697640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11325447302400).

8717199697640 is an abundant number, since it is smaller than the sum of its proper divisors (13933694907160).

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

8717199697640 is a wasteful number, since it uses less digits than its factorization.

8717199697640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58915 (or 58911 counting only the distinct ones).

The product of its (nonzero) digits is 288054144, while the sum is 74.

The spelling of 8717199697640 in words is "eight trillion, seven hundred seventeen billion, one hundred ninety-nine million, six hundred ninety-seven thousand, six hundred forty".