67328791289 has 2 divisors, whose sum is σ = 67328791290. Its totient is φ = 67328791288.

The previous prime is 67328791279. The next prime is 67328791333. The reversal of 67328791289 is 98219782376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65349253225 + 1979538064 = 255635^2 + 44492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67328791289 is a prime.

It is a super-2 number, since 2×67328791289² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67328791279) 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, 33664395644 + 33664395645.

It is an arithmetic number, because the mean of its divisors is an integer number (33664395645).

Almost surely, 2^67328791289 is an apocalyptic number.

It is an amenable number.

67328791289 is a deficient number, since it is larger than the sum of its proper divisors (1).

67328791289 is an equidigital number, since it uses as much as digits as its factorization.

67328791289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18289152, while the sum is 62.

The spelling of 67328791289 in words is "sixty-seven billion, three hundred twenty-eight million, seven hundred ninety-one thousand, two hundred eighty-nine".