68134668029 has 2 divisors, whose sum is σ = 68134668030. Its totient is φ = 68134668028.

The previous prime is 68134668013. The next prime is 68134668071. The reversal of 68134668029 is 92086643186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67913402404 + 221265625 = 260602^2 + 14875^2 .

It is a cyclic number.

It is not a de Polignac number, because 68134668029 - 2⁴ = 68134668013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68134668229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34067334014 + 34067334015.

It is an arithmetic number, because the mean of its divisors is an integer number (34067334015).

Almost surely, 2^68134668029 is an apocalyptic number.

It is an amenable number.

68134668029 is a deficient number, since it is larger than the sum of its proper divisors (1).

68134668029 is an equidigital number, since it uses as much as digits as its factorization.

68134668029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 68134668029 in words is "sixty-eight billion, one hundred thirty-four million, six hundred sixty-eight thousand, twenty-nine".