168100644883903 has 2 divisors, whose sum is σ = 168100644883904. Its totient is φ = 168100644883902.

The previous prime is 168100644883901. The next prime is 168100644884009. The reversal of 168100644883903 is 309388446001861.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168100644883903 - 2¹ = 168100644883901 is a prime.

Together with 168100644883901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168100644883901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84050322441951 + 84050322441952.

It is an arithmetic number, because the mean of its divisors is an integer number (84050322441952).

Almost surely, 2^{168100644883903} is an apocalyptic number.

168100644883903 is a deficient number, since it is larger than the sum of its proper divisors (1).

168100644883903 is an equidigital number, since it uses as much as digits as its factorization.

168100644883903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23887872, while the sum is 61.

The spelling of 168100644883903 in words is "one hundred sixty-eight trillion, one hundred billion, six hundred forty-four million, eight hundred eighty-three thousand, nine hundred three".