8661164999 has 2 divisors, whose sum is σ = 8661165000. Its totient is φ = 8661164998.

The previous prime is 8661164983. The next prime is 8661165001. The reversal of 8661164999 is 9994611668.

8661164999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8661164999 - 2⁴ = 8661164983 is a prime.

Together with 8661165001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8661164299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4330582499 + 4330582500.

It is an arithmetic number, because the mean of its divisors is an integer number (4330582500).

Almost surely, 2^8661164999 is an apocalyptic number.

8661164999 is a deficient number, since it is larger than the sum of its proper divisors (1).

8661164999 is an equidigital number, since it uses as much as digits as its factorization.

8661164999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 59.

The square root of 8661164999 is about 93065.3802388407. The cubic root of 8661164999 is about 2053.6453085601.

The spelling of 8661164999 in words is "eight billion, six hundred sixty-one million, one hundred sixty-four thousand, nine hundred ninety-nine".