68235418547 has 2 divisors, whose sum is σ = 68235418548. Its totient is φ = 68235418546.

The previous prime is 68235418529. The next prime is 68235418577. The reversal of 68235418547 is 74581453286.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68235418547 - 2⁶ = 68235418483 is a prime.

It is not a weakly prime, because it can be changed into another prime (68235418577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34117709273 + 34117709274.

It is an arithmetic number, because the mean of its divisors is an integer number (34117709274).

Almost surely, 2^68235418547 is an apocalyptic number.

68235418547 is a deficient number, since it is larger than the sum of its proper divisors (1).

68235418547 is an equidigital number, since it uses as much as digits as its factorization.

68235418547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6451200, while the sum is 53.

The spelling of 68235418547 in words is "sixty-eight billion, two hundred thirty-five million, four hundred eighteen thousand, five hundred forty-seven".