68207605273 has 2 divisors, whose sum is σ = 68207605274. Its totient is φ = 68207605272.

The previous prime is 68207605247. The next prime is 68207605283. The reversal of 68207605273 is 37250670286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65210261769 + 2997343504 = 255363^2 + 54748^2 .

It is a cyclic number.

It is not a de Polignac number, because 68207605273 - 2³³ = 59617670681 is a prime.

It is not a weakly prime, because it can be changed into another prime (68207605283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34103802636 + 34103802637.

It is an arithmetic number, because the mean of its divisors is an integer number (34103802637).

Almost surely, 2^68207605273 is an apocalyptic number.

It is an amenable number.

68207605273 is a deficient number, since it is larger than the sum of its proper divisors (1).

68207605273 is an equidigital number, since it uses as much as digits as its factorization.

68207605273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 68207605273 in words is "sixty-eight billion, two hundred seven million, six hundred five thousand, two hundred seventy-three".