68532949729 has 2 divisors, whose sum is σ = 68532949730. Its totient is φ = 68532949728.

The previous prime is 68532949691. The next prime is 68532949769. The reversal of 68532949729 is 92794923586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53790133329 + 14742816400 = 231927^2 + 121420^2 .

It is a cyclic number.

It is not a de Polignac number, because 68532949729 - 2⁷ = 68532949601 is a prime.

It is not a weakly prime, because it can be changed into another prime (68532949769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34266474864 + 34266474865.

It is an arithmetic number, because the mean of its divisors is an integer number (34266474865).

Almost surely, 2^68532949729 is an apocalyptic number.

It is an amenable number.

68532949729 is a deficient number, since it is larger than the sum of its proper divisors (1).

68532949729 is an equidigital number, since it uses as much as digits as its factorization.

68532949729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58786560, while the sum is 64.

The spelling of 68532949729 in words is "sixty-eight billion, five hundred thirty-two million, nine hundred forty-nine thousand, seven hundred twenty-nine".