68006668242823 has 2 divisors, whose sum is σ = 68006668242824. Its totient is φ = 68006668242822.

The previous prime is 68006668242769. The next prime is 68006668242827. The reversal of 68006668242823 is 32824286660086.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68006668242823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68006668242827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34003334121411 + 34003334121412.

It is an arithmetic number, because the mean of its divisors is an integer number (34003334121412).

Almost surely, 2^{68006668242823} is an apocalyptic number.

68006668242823 is a deficient number, since it is larger than the sum of its proper divisors (1).

68006668242823 is an equidigital number, since it uses as much as digits as its factorization.

68006668242823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63700992, while the sum is 61.

The spelling of 68006668242823 in words is "sixty-eight trillion, six billion, six hundred sixty-eight million, two hundred forty-two thousand, eight hundred twenty-three".