82773223889 has 2 divisors, whose sum is σ = 82773223890. Its totient is φ = 82773223888.

The previous prime is 82773223861. The next prime is 82773223903. The reversal of 82773223889 is 98832237728.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46059598225 + 36713625664 = 214615^2 + 191608^2 .

It is a cyclic number.

It is not a de Polignac number, because 82773223889 - 2²⁴ = 82756446673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (82773223829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41386611944 + 41386611945.

It is an arithmetic number, because the mean of its divisors is an integer number (41386611945).

Almost surely, 2^82773223889 is an apocalyptic number.

It is an amenable number.

82773223889 is a deficient number, since it is larger than the sum of its proper divisors (1).

82773223889 is an equidigital number, since it uses as much as digits as its factorization.

82773223889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16257024, while the sum is 59.

The spelling of 82773223889 in words is "eighty-two billion, seven hundred seventy-three million, two hundred twenty-three thousand, eight hundred eighty-nine".