8117744772 has 12 divisors (see below), whose sum is σ = 18941404496. Its totient is φ = 2705914920.

The previous prime is 8117744771. The next prime is 8117744773. The reversal of 8117744772 is 2774477118.

It is an interprime number because it is at equal distance from previous prime (8117744771) and next prime (8117744773).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (8117744771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338239354 + ... + 338239377.

Almost surely, 2^8117744772 is an apocalyptic number.

It is an amenable number.

8117744772 is an abundant number, since it is smaller than the sum of its proper divisors (10823659724).

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

8117744772 is a wasteful number, since it uses less digits than its factorization.

8117744772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676478738 (or 676478736 counting only the distinct ones).

The product of its digits is 614656, while the sum is 48.

The square root of 8117744772 is about 90098.5281344818. The cubic root of 8117744772 is about 2009.7643158226.

The spelling of 8117744772 in words is "eight billion, one hundred seventeen million, seven hundred forty-four thousand, seven hundred seventy-two".