67773270809 has 2 divisors, whose sum is σ = 67773270810. Its totient is φ = 67773270808.

The previous prime is 67773270793. The next prime is 67773270841. The reversal of 67773270809 is 90807237776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53143158784 + 14630112025 = 230528^2 + 120955^2 .

It is a cyclic number.

It is not a de Polignac number, because 67773270809 - 2⁴ = 67773270793 is a prime.

It is not a weakly prime, because it can be changed into another prime (67773279809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33886635404 + 33886635405.

It is an arithmetic number, because the mean of its divisors is an integer number (33886635405).

Almost surely, 2^67773270809 is an apocalyptic number.

It is an amenable number.

67773270809 is a deficient number, since it is larger than the sum of its proper divisors (1).

67773270809 is an equidigital number, since it uses as much as digits as its factorization.

67773270809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6223392, while the sum is 56.

The spelling of 67773270809 in words is "sixty-seven billion, seven hundred seventy-three million, two hundred seventy thousand, eight hundred nine".