68188617113 has 2 divisors, whose sum is σ = 68188617114. Its totient is φ = 68188617112.

The previous prime is 68188617031. The next prime is 68188617137. The reversal of 68188617113 is 31171688186.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55381620889 + 12806996224 = 235333^2 + 113168^2 .

It is a cyclic number.

It is not a de Polignac number, because 68188617113 - 2¹⁶ = 68188551577 is a prime.

It is not a weakly prime, because it can be changed into another prime (68188617143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34094308556 + 34094308557.

It is an arithmetic number, because the mean of its divisors is an integer number (34094308557).

Almost surely, 2^68188617113 is an apocalyptic number.

It is an amenable number.

68188617113 is a deficient number, since it is larger than the sum of its proper divisors (1).

68188617113 is an equidigital number, since it uses as much as digits as its factorization.

68188617113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 50.

The spelling of 68188617113 in words is "sixty-eight billion, one hundred eighty-eight million, six hundred seventeen thousand, one hundred thirteen".