67268563697 has 2 divisors, whose sum is σ = 67268563698. Its totient is φ = 67268563696.

The previous prime is 67268563667. The next prime is 67268563717. The reversal of 67268563697 is 79636586276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51637563121 + 15631000576 = 227239^2 + 125024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67268563697 is a prime.

It is not a weakly prime, because it can be changed into another prime (67268563667) 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, 33634281848 + 33634281849.

It is an arithmetic number, because the mean of its divisors is an integer number (33634281849).

Almost surely, 2^67268563697 is an apocalyptic number.

It is an amenable number.

67268563697 is a deficient number, since it is larger than the sum of its proper divisors (1).

67268563697 is an equidigital number, since it uses as much as digits as its factorization.

67268563697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 137168640, while the sum is 65.

The spelling of 67268563697 in words is "sixty-seven billion, two hundred sixty-eight million, five hundred sixty-three thousand, six hundred ninety-seven".