8861968809 has 32 divisors (see below), whose sum is σ = 14009206400. Its totient is φ = 5520337920.

The previous prime is 8861968789. The next prime is 8861968813. The reversal of 8861968809 is 9088691688.

8861968809 is a `hidden beast` number, since 8 + 8 + 619 + 6 + 8 + 8 + 0 + 9 = 666.

It is not a de Polignac number, because 8861968809 - 2¹⁷ = 8861837737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8861968909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80872 + ... + 155769.

It is an arithmetic number, because the mean of its divisors is an integer number (437787700).

Almost surely, 2^8861968809 is an apocalyptic number.

It is an amenable number.

8861968809 is a deficient number, since it is larger than the sum of its proper divisors (5147237591).

8861968809 is a wasteful number, since it uses less digits than its factorization.

8861968809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236742 (or 236736 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 63.

The square root of 8861968809 is about 94138.0306199360. The cubic root of 8861968809 is about 2069.3950490151.

The spelling of 8861968809 in words is "eight billion, eight hundred sixty-one million, nine hundred sixty-eight thousand, eight hundred nine".