67108731247 has 2 divisors, whose sum is σ = 67108731248. Its totient is φ = 67108731246.

The previous prime is 67108731203. The next prime is 67108731271. The reversal of 67108731247 is 74213780176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67108731247 - 2⁷ = 67108731119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67108731197 and 67108731206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67108731047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33554365623 + 33554365624.

It is an arithmetic number, because the mean of its divisors is an integer number (33554365624).

Almost surely, 2^67108731247 is an apocalyptic number.

67108731247 is a deficient number, since it is larger than the sum of its proper divisors (1).

67108731247 is an equidigital number, since it uses as much as digits as its factorization.

67108731247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 67108731247 in words is "sixty-seven billion, one hundred eight million, seven hundred thirty-one thousand, two hundred forty-seven".