67773270857 has 2 divisors, whose sum is σ = 67773270858. Its totient is φ = 67773270856.

The previous prime is 67773270841. The next prime is 67773270893. The reversal of 67773270857 is 75807237776.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64469780281 + 3303490576 = 253909^2 + 57476^2 .

It is a cyclic number.

It is not a de Polignac number, because 67773270857 - 2⁴ = 67773270841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67773270796 and 67773270805.

It is not a weakly prime, because it can be changed into another prime (67773230857) 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, 33886635428 + 33886635429.

It is an arithmetic number, because the mean of its divisors is an integer number (33886635429).

Almost surely, 2^67773270857 is an apocalyptic number.

It is an amenable number.

67773270857 is a deficient number, since it is larger than the sum of its proper divisors (1).

67773270857 is an equidigital number, since it uses as much as digits as its factorization.

67773270857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24202080, while the sum is 59.

The spelling of 67773270857 in words is "sixty-seven billion, seven hundred seventy-three million, two hundred seventy thousand, eight hundred fifty-seven".