8378136768 has 112 divisors (see below), whose sum is σ = 23370600960. Its totient is φ = 2643615744.

The previous prime is 8378136757. The next prime is 8378136769. The reversal of 8378136768 is 8676318738.

It is not an unprimeable number, because it can be changed into a prime (8378136769) 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, 418573 + ... + 438131.

It is an arithmetic number, because the mean of its divisors is an integer number (208666080).

Almost surely, 2^8378136768 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 8378136768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11685300480).

8378136768 is an abundant number, since it is smaller than the sum of its proper divisors (14992464192).

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

8378136768 is a wasteful number, since it uses less digits than its factorization.

8378136768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19694 (or 19684 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 57.

The square root of 8378136768 is about 91532.1624785518. The cubic root of 8378136768 is about 2031.0275535837.

The spelling of 8378136768 in words is "eight billion, three hundred seventy-eight million, one hundred thirty-six thousand, seven hundred sixty-eight".