8561630811 has 8 divisors (see below), whose sum is σ = 11543772240. Its totient is φ = 5643621632.

The previous prime is 8561630807. The next prime is 8561630827. The reversal of 8561630811 is 1180361658.

8561630811 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8561630811 - 2² = 8561630807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8561630811.

It is not an unprimeable number, because it can be changed into a prime (8561630801) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16032750 + ... + 16033283.

It is an arithmetic number, because the mean of its divisors is an integer number (1442971530).

Almost surely, 2^8561630811 is an apocalyptic number.

8561630811 is a deficient number, since it is larger than the sum of its proper divisors (2982141429).

8561630811 is a wasteful number, since it uses less digits than its factorization.

8561630811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32066125.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 8561630811 is about 92529.0808935223. The cubic root of 8561630811 is about 2045.7481424841.

The spelling of 8561630811 in words is "eight billion, five hundred sixty-one million, six hundred thirty thousand, eight hundred eleven".