68485809433 has 2 divisors, whose sum is σ = 68485809434. Its totient is φ = 68485809432.

The previous prime is 68485809409. The next prime is 68485809437. The reversal of 68485809433 is 33490858486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60628227984 + 7857581449 = 246228^2 + 88643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68485809433 is a prime.

It is not a weakly prime, because it can be changed into another prime (68485809437) 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, 34242904716 + 34242904717.

It is an arithmetic number, because the mean of its divisors is an integer number (34242904717).

Almost surely, 2^68485809433 is an apocalyptic number.

It is an amenable number.

68485809433 is a deficient number, since it is larger than the sum of its proper divisors (1).

68485809433 is an equidigital number, since it uses as much as digits as its factorization.

68485809433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 68485809433 in words is "sixty-eight billion, four hundred eighty-five million, eight hundred nine thousand, four hundred thirty-three".