67128652813 has 2 divisors, whose sum is σ = 67128652814. Its totient is φ = 67128652812.

The previous prime is 67128652751. The next prime is 67128652819. The reversal of 67128652813 is 31825682176.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60706553769 + 6422099044 = 246387^2 + 80138^2 .

It is a cyclic number.

It is not a de Polignac number, because 67128652813 - 2²⁹ = 66591781901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67128652819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33564326406 + 33564326407.

It is an arithmetic number, because the mean of its divisors is an integer number (33564326407).

Almost surely, 2^67128652813 is an apocalyptic number.

It is an amenable number.

67128652813 is a deficient number, since it is larger than the sum of its proper divisors (1).

67128652813 is an equidigital number, since it uses as much as digits as its factorization.

67128652813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The spelling of 67128652813 in words is "sixty-seven billion, one hundred twenty-eight million, six hundred fifty-two thousand, eight hundred thirteen".