8561708572608 has 224 divisors, whose sum is σ = 25427257369920. Its totient is φ = 2824733491200.

The previous prime is 8561708572589. The next prime is 8561708572643. The reversal of 8561708572608 is 8062758071658.

8561708572608 is a `hidden beast` number, since 8 + 5 + 6 + 17 + 0 + 8 + 5 + 7 + 2 + 608 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735978760 + ... + 735990392.

It is an arithmetic number, because the mean of its divisors is an integer number (113514541830).

Almost surely, 2^{8561708572608} 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 8561708572608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12713628684960).

8561708572608 is an abundant number, since it is smaller than the sum of its proper divisors (16865548797312).

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

8561708572608 is a wasteful number, since it uses less digits than its factorization.

8561708572608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15972 (or 15956 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 63.

The spelling of 8561708572608 in words is "eight trillion, five hundred sixty-one billion, seven hundred eight million, five hundred seventy-two thousand, six hundred eight".