168100644884009 has 2 divisors, whose sum is σ = 168100644884010. Its totient is φ = 168100644884008.

The previous prime is 168100644883903. The next prime is 168100644884033. The reversal of 168100644884009 is 900488446001861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167058210010000 + 1042434874009 = 12925100^2 + 1020997^2 .

It is a cyclic number.

It is not a de Polignac number, because 168100644884009 - 2³⁶ = 168031925407273 is a prime.

It is not a weakly prime, because it can be changed into another prime (168100644884069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84050322442004 + 84050322442005.

It is an arithmetic number, because the mean of its divisors is an integer number (84050322442005).

Almost surely, 2^{168100644884009} is an apocalyptic number.

It is an amenable number.

168100644884009 is a deficient number, since it is larger than the sum of its proper divisors (1).

168100644884009 is an equidigital number, since it uses as much as digits as its factorization.

168100644884009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10616832, while the sum is 59.

The spelling of 168100644884009 in words is "one hundred sixty-eight trillion, one hundred billion, six hundred forty-four million, eight hundred eighty-four thousand, nine".