68212538089 has 2 divisors, whose sum is σ = 68212538090. Its totient is φ = 68212538088.

The previous prime is 68212537997. The next prime is 68212538129. The reversal of 68212538089 is 98083521286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66981580864 + 1230957225 = 258808^2 + 35085^2 .

It is a cyclic number.

It is not a de Polignac number, because 68212538089 - 2⁹ = 68212537577 is a prime.

It is not a weakly prime, because it can be changed into another prime (68212538189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34106269044 + 34106269045.

It is an arithmetic number, because the mean of its divisors is an integer number (34106269045).

Almost surely, 2^68212538089 is an apocalyptic number.

It is an amenable number.

68212538089 is a deficient number, since it is larger than the sum of its proper divisors (1).

68212538089 is an equidigital number, since it uses as much as digits as its factorization.

68212538089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 68212538089 in words is "sixty-eight billion, two hundred twelve million, five hundred thirty-eight thousand, eighty-nine".