8561140147868 has 48 divisors (see below), whose sum is σ = 19661948678400. Its totient is φ = 3159956033280.

The previous prime is 8561140147783. The next prime is 8561140147871. The reversal of 8561140147868 is 8687410411658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731465453 + ... + 731477156.

It is an arithmetic number, because the mean of its divisors is an integer number (409623930800).

Almost surely, 2^{8561140147868} is an apocalyptic number.

It is an amenable number.

8561140147868 is an abundant number, since it is smaller than the sum of its proper divisors (11100808530532).

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

8561140147868 is a wasteful number, since it uses less digits than its factorization.

8561140147868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462942650 (or 1462942648 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 59.

The spelling of 8561140147868 in words is "eight trillion, five hundred sixty-one billion, one hundred forty million, one hundred forty-seven thousand, eight hundred sixty-eight".