8668129680 has 160 divisors (see below), whose sum is σ = 34122220800. Its totient is φ = 1981283328.

The previous prime is 8668129637. The next prime is 8668129681. The reversal of 8668129680 is 869218668.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8668129681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 271525 + ... + 301764.

It is an arithmetic number, because the mean of its divisors is an integer number (213263880).

Almost surely, 2^8668129680 is an apocalyptic number.

8668129680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8668129680 is an abundant number, since it is smaller than the sum of its proper divisors (25454091120).

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

8668129680 is a wasteful number, since it uses less digits than its factorization.

8668129680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573318 (or 573306 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 8668129680 is about 93102.7909356105. The cubic root of 8668129680 is about 2054.1956253042.

The spelling of 8668129680 in words is "eight billion, six hundred sixty-eight million, one hundred twenty-nine thousand, six hundred eighty".