8561534668 has 12 divisors (see below), whose sum is σ = 15137147032. Its totient is φ = 4236635520.

The previous prime is 8561534659. The next prime is 8561534687. The reversal of 8561534668 is 8664351658.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11032518 + ... + 11033293.

Almost surely, 2^8561534668 is an apocalyptic number.

It is an amenable number.

8561534668 is a deficient number, since it is larger than the sum of its proper divisors (6575612364).

8561534668 is a wasteful number, since it uses less digits than its factorization.

8561534668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22065912 (or 22065910 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 52.

The square root of 8561534668 is about 92528.5613635055. The cubic root of 8561534668 is about 2045.7404848659.

The spelling of 8561534668 in words is "eight billion, five hundred sixty-one million, five hundred thirty-four thousand, six hundred sixty-eight".