82773225917 has 2 divisors, whose sum is σ = 82773225918. Its totient is φ = 82773225916.

The previous prime is 82773225859. The next prime is 82773225923. The reversal of 82773225917 is 71952237728.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47903639161 + 34869586756 = 218869^2 + 186734^2 .

It is a cyclic number.

It is not a de Polignac number, because 82773225917 - 2²² = 82769031613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82773225617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41386612958 + 41386612959.

It is an arithmetic number, because the mean of its divisors is an integer number (41386612959).

Almost surely, 2^82773225917 is an apocalyptic number.

It is an amenable number.

82773225917 is a deficient number, since it is larger than the sum of its proper divisors (1).

82773225917 is an equidigital number, since it uses as much as digits as its factorization.

82773225917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2963520, while the sum is 53.

The spelling of 82773225917 in words is "eighty-two billion, seven hundred seventy-three million, two hundred twenty-five thousand, nine hundred seventeen".