67449306109 has 2 divisors, whose sum is σ = 67449306110. Its totient is φ = 67449306108.

The previous prime is 67449306091. The next prime is 67449306151. The reversal of 67449306109 is 90160394476.

Together with previous prime (67449306091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53097984900 + 14351321209 = 230430^2 + 119797^2 .

It is a cyclic number.

It is not a de Polignac number, because 67449306109 - 2¹⁷ = 67449175037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67449306409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33724653054 + 33724653055.

It is an arithmetic number, because the mean of its divisors is an integer number (33724653055).

Almost surely, 2^67449306109 is an apocalyptic number.

It is an amenable number.

67449306109 is a deficient number, since it is larger than the sum of its proper divisors (1).

67449306109 is an equidigital number, since it uses as much as digits as its factorization.

67449306109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 67449306109 in words is "sixty-seven billion, four hundred forty-nine million, three hundred six thousand, one hundred nine".