534288378821689 has 2 divisors, whose sum is σ = 534288378821690. Its totient is φ = 534288378821688.

The previous prime is 534288378821623. The next prime is 534288378821759. The reversal of 534288378821689 is 986128873882435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269337069666064 + 264951309155625 = 16411492^2 + 16277325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-534288378821689 is a prime.

It is not a weakly prime, because it can be changed into another prime (534288378821089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267144189410844 + 267144189410845.

It is an arithmetic number, because the mean of its divisors is an integer number (267144189410845).

Almost surely, 2^{534288378821689} is an apocalyptic number.

It is an amenable number.

534288378821689 is a deficient number, since it is larger than the sum of its proper divisors (1).

534288378821689 is an equidigital number, since it uses as much as digits as its factorization.

534288378821689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8918138880, while the sum is 82.

The spelling of 534288378821689 in words is "five hundred thirty-four trillion, two hundred eighty-eight billion, three hundred seventy-eight million, eight hundred twenty-one thousand, six hundred eighty-nine".