68820302773 has 2 divisors, whose sum is σ = 68820302774. Its totient is φ = 68820302772.

The previous prime is 68820302753. The next prime is 68820302779. The reversal of 68820302773 is 37720302886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59734781649 + 9085521124 = 244407^2 + 95318^2 .

It is a cyclic number.

It is not a de Polignac number, because 68820302773 - 2²⁹ = 68283431861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68820302779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34410151386 + 34410151387.

It is an arithmetic number, because the mean of its divisors is an integer number (34410151387).

Almost surely, 2^68820302773 is an apocalyptic number.

It is an amenable number.

68820302773 is a deficient number, since it is larger than the sum of its proper divisors (1).

68820302773 is an equidigital number, since it uses as much as digits as its factorization.

68820302773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 68820302773 in words is "sixty-eight billion, eight hundred twenty million, three hundred two thousand, seven hundred seventy-three".