68744071069 has 2 divisors, whose sum is σ = 68744071070. Its totient is φ = 68744071068.

The previous prime is 68744071013. The next prime is 68744071091. The reversal of 68744071069 is 96017044786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64535305444 + 4208765625 = 254038^2 + 64875^2 .

It is a cyclic number.

It is not a de Polignac number, because 68744071069 - 2⁹ = 68744070557 is a prime.

It is a super-2 number, since 2×68744071069² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68744071009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34372035534 + 34372035535.

It is an arithmetic number, because the mean of its divisors is an integer number (34372035535).

Almost surely, 2^68744071069 is an apocalyptic number.

It is an amenable number.

68744071069 is a deficient number, since it is larger than the sum of its proper divisors (1).

68744071069 is an equidigital number, since it uses as much as digits as its factorization.

68744071069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 68744071069 in words is "sixty-eight billion, seven hundred forty-four million, seventy-one thousand, sixty-nine".