8561168542080 has 768 divisors, whose sum is σ = 37461838003200. Its totient is φ = 1749775564800.

The previous prime is 8561168542007. The next prime is 8561168542097. The reversal of 8561168542080 is 802458611658.

8561168542080 is a `hidden beast` number, since 8 + 5 + 6 + 1 + 16 + 8 + 542 + 0 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 26896501 + ... + 27212939.

It is an arithmetic number, because the mean of its divisors is an integer number (48778434900).

Almost surely, 2^{8561168542080} is an apocalyptic number.

8561168542080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8561168542080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18730919001600).

8561168542080 is an abundant number, since it is smaller than the sum of its proper divisors (28900669461120).

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

8561168542080 is a wasteful number, since it uses less digits than its factorization.

8561168542080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316543 (or 316528 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 54.

The spelling of 8561168542080 in words is "eight trillion, five hundred sixty-one billion, one hundred sixty-eight million, five hundred forty-two thousand, eighty".