9718475797808 has 80 divisors (see below), whose sum is σ = 18953942941440. Its totient is φ = 4827270252288.

The previous prime is 9718475797801. The next prime is 9718475797817. The reversal of 9718475797808 is 8087975748179.

It is a Cunningham number, because it is equal to 3117447²-1.

It is not an unprimeable number, because it can be changed into a prime (9718475797801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2425372541 + ... + 2425376547.

It is an arithmetic number, because the mean of its divisors is an integer number (236924286768).

Almost surely, 2^{9718475797808} is an apocalyptic number.

It is an amenable number.

9718475797808 is a deficient number, since it is larger than the sum of its proper divisors (9235467143632).

9718475797808 is a wasteful number, since it uses less digits than its factorization.

9718475797808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5874 (or 5868 counting only the distinct ones).

The product of its (nonzero) digits is 1991485440, while the sum is 80.

The spelling of 9718475797808 in words is "nine trillion, seven hundred eighteen billion, four hundred seventy-five million, seven hundred ninety-seven thousand, eight hundred eight".