84168500089 has 2 divisors, whose sum is σ = 84168500090. Its totient is φ = 84168500088.

The previous prime is 84168500057. The next prime is 84168500123. The reversal of 84168500089 is 98000586148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83525624064 + 642876025 = 289008^2 + 25355^2 .

It is a cyclic number.

It is not a de Polignac number, because 84168500089 - 2⁵ = 84168500057 is a prime.

It is not a weakly prime, because it can be changed into another prime (84168900089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42084250044 + 42084250045.

It is an arithmetic number, because the mean of its divisors is an integer number (42084250045).

Almost surely, 2^84168500089 is an apocalyptic number.

It is an amenable number.

84168500089 is a deficient number, since it is larger than the sum of its proper divisors (1).

84168500089 is an equidigital number, since it uses as much as digits as its factorization.

84168500089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 49.

The spelling of 84168500089 in words is "eighty-four billion, one hundred sixty-eight million, five hundred thousand, eighty-nine".