67705112317 has 2 divisors, whose sum is σ = 67705112318. Its totient is φ = 67705112316.

The previous prime is 67705112309. The next prime is 67705112341. The reversal of 67705112317 is 71321150776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67195526841 + 509585476 = 259221^2 + 22574^2 .

It is a cyclic number.

It is not a de Polignac number, because 67705112317 - 2³ = 67705112309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67705112317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67708112317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33852556158 + 33852556159.

It is an arithmetic number, because the mean of its divisors is an integer number (33852556159).

Almost surely, 2^67705112317 is an apocalyptic number.

It is an amenable number.

67705112317 is a deficient number, since it is larger than the sum of its proper divisors (1).

67705112317 is an equidigital number, since it uses as much as digits as its factorization.

67705112317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61740, while the sum is 40.

The spelling of 67705112317 in words is "sixty-seven billion, seven hundred five million, one hundred twelve thousand, three hundred seventeen".