22168885993 has 2 divisors, whose sum is σ = 22168885994. Its totient is φ = 22168885992.

The previous prime is 22168885979. The next prime is 22168886041. The reversal of 22168885993 is 39958886122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19113892009 + 3054993984 = 138253^2 + 55272^2 .

It is a cyclic number.

It is not a de Polignac number, because 22168885993 - 2¹⁷ = 22168754921 is a prime.

It is not a weakly prime, because it can be changed into another prime (22168885933) 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 as a sum of consecutive naturals, namely, 11084442996 + 11084442997.

It is an arithmetic number, because the mean of its divisors is an integer number (11084442997).

Almost surely, 2^22168885993 is an apocalyptic number.

It is an amenable number.

22168885993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22168885993 is an equidigital number, since it uses as much as digits as its factorization.

22168885993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14929920, while the sum is 61.

The spelling of 22168885993 in words is "twenty-two billion, one hundred sixty-eight million, eight hundred eighty-five thousand, nine hundred ninety-three".