68922189405205 has 8 divisors (see below), whose sum is σ = 82707034591800. Its totient is φ = 55137479987136.

The previous prime is 68922189405193. The next prime is 68922189405227. The reversal of 68922189405205 is 50250498122986.

It can be written as a sum of positive squares in 4 ways, for example, as 2287326536881 + 66634862868324 = 1512391^2 + 8163018^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68922189405205 - 2⁹ = 68922189404693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32821950 + ... + 34858639.

It is an arithmetic number, because the mean of its divisors is an integer number (10338379323975).

Almost surely, 2^{68922189405205} is an apocalyptic number.

It is an amenable number.

68922189405205 is a deficient number, since it is larger than the sum of its proper divisors (13784845186595).

68922189405205 is a wasteful number, since it uses less digits than its factorization.

68922189405205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67884263.

The product of its (nonzero) digits is 24883200, while the sum is 61.

The spelling of 68922189405205 in words is "sixty-eight trillion, nine hundred twenty-two billion, one hundred eighty-nine million, four hundred five thousand, two hundred five".