67063556689397 has 2 divisors, whose sum is σ = 67063556689398. Its totient is φ = 67063556689396.

The previous prime is 67063556689291. The next prime is 67063556689411. The reversal of 67063556689397 is 79398665536076.

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., 62036952333316 + 5026604356081 = 7876354^2 + 2242009^2 .

It is a cyclic number.

It is not a de Polignac number, because 67063556689397 - 2¹⁸ = 67063556427253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67063556689897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33531778344698 + 33531778344699.

It is an arithmetic number, because the mean of its divisors is an integer number (33531778344699).

Almost surely, 2^{67063556689397} is an apocalyptic number.

It is an amenable number.

67063556689397 is a deficient number, since it is larger than the sum of its proper divisors (1).

67063556689397 is an equidigital number, since it uses as much as digits as its factorization.

67063556689397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9258883200, while the sum is 80.

The spelling of 67063556689397 in words is "sixty-seven trillion, sixty-three billion, five hundred fifty-six million, six hundred eighty-nine thousand, three hundred ninety-seven".