61717943407067 has 2 divisors, whose sum is σ = 61717943407068. Its totient is φ = 61717943407066.

The previous prime is 61717943407027. The next prime is 61717943407123. The reversal of 61717943407067 is 76070434971716.

It is a happy number.

61717943407067 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61717943407067 - 2¹² = 61717943402971 is a prime.

It is not a weakly prime, because it can be changed into another prime (61717943407007) 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, 30858971703533 + 30858971703534.

It is an arithmetic number, because the mean of its divisors is an integer number (30858971703534).

Almost surely, 2^{61717943407067} is an apocalyptic number.

61717943407067 is a deficient number, since it is larger than the sum of its proper divisors (1).

61717943407067 is an equidigital number, since it uses as much as digits as its factorization.

61717943407067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37340352, while the sum is 62.

The spelling of 61717943407067 in words is "sixty-one trillion, seven hundred seventeen billion, nine hundred forty-three million, four hundred seven thousand, sixty-seven".