8561993160 has 128 divisors (see below), whose sum is σ = 30038215680. Its totient is φ = 1911506688.

The previous prime is 8561993129. The next prime is 8561993189. The reversal of 8561993160 is 613991658.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82402 + ... + 154641.

It is an arithmetic number, because the mean of its divisors is an integer number (234673560).

Almost surely, 2^8561993160 is an apocalyptic number.

It is an amenable number.

8561993160 is an abundant number, since it is smaller than the sum of its proper divisors (21476222520).

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

8561993160 is a wasteful number, since it uses less digits than its factorization.

8561993160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237107 (or 237103 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 8561993160 is about 92531.0389004684. The cubic root of 8561993160 is about 2045.7770024195. Note that the first 3 decimals are identical.

The spelling of 8561993160 in words is "eight billion, five hundred sixty-one million, nine hundred ninety-three thousand, one hundred sixty".