67616744226217 has 2 divisors, whose sum is σ = 67616744226218. Its totient is φ = 67616744226216.

The previous prime is 67616744226209. The next prime is 67616744226263. The reversal of 67616744226217 is 71262244761676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36580045844736 + 31036698381481 = 6048144^2 + 5571059^2 .

It is a cyclic number.

It is not a de Polignac number, because 67616744226217 - 2³ = 67616744226209 is a prime.

It is not a weakly prime, because it can be changed into another prime (67616744266217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33808372113108 + 33808372113109.

It is an arithmetic number, because the mean of its divisors is an integer number (33808372113109).

Almost surely, 2^{67616744226217} is an apocalyptic number.

It is an amenable number.

67616744226217 is a deficient number, since it is larger than the sum of its proper divisors (1).

67616744226217 is an equidigital number, since it uses as much as digits as its factorization.

67616744226217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56899584, while the sum is 61.

The spelling of 67616744226217 in words is "sixty-seven trillion, six hundred sixteen billion, seven hundred forty-four million, two hundred twenty-six thousand, two hundred seventeen".