67687872104717 has 2 divisors, whose sum is σ = 67687872104718. Its totient is φ = 67687872104716.

The previous prime is 67687872104663. The next prime is 67687872104719. The reversal of 67687872104717 is 71740127878676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43332650224516 + 24355221880201 = 6582754^2 + 4935101^2 .

It is a cyclic number.

It is not a de Polignac number, because 67687872104717 - 2⁶ = 67687872104653 is a prime.

Together with 67687872104719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67687872104719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33843936052358 + 33843936052359.

It is an arithmetic number, because the mean of its divisors is an integer number (33843936052359).

Almost surely, 2^{67687872104717} is an apocalyptic number.

It is an amenable number.

67687872104717 is a deficient number, since it is larger than the sum of its proper divisors (1).

67687872104717 is an equidigital number, since it uses as much as digits as its factorization.

67687872104717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 309786624, while the sum is 71.

The spelling of 67687872104717 in words is "sixty-seven trillion, six hundred eighty-seven billion, eight hundred seventy-two million, one hundred four thousand, seven hundred seventeen".