8197991704672 has 96 divisors (see below), whose sum is σ = 20771451316224. Its totient is φ = 3090989721600.

The previous prime is 8197991704663. The next prime is 8197991704697. The reversal of 8197991704672 is 2764071997918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53586633 + ... + 53739400.

It is an arithmetic number, because the mean of its divisors is an integer number (216369284544).

Almost surely, 2^{8197991704672} is an apocalyptic number.

It is an amenable number.

8197991704672 is an abundant number, since it is smaller than the sum of its proper divisors (12573459611552).

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

8197991704672 is a wasteful number, since it uses less digits than its factorization.

8197991704672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107326092 (or 107326084 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 70.

The spelling of 8197991704672 in words is "eight trillion, one hundred ninety-seven billion, nine hundred ninety-one million, seven hundred four thousand, six hundred seventy-two".