82123594439 has 2 divisors, whose sum is σ = 82123594440. Its totient is φ = 82123594438.

The previous prime is 82123594331. The next prime is 82123594457. The reversal of 82123594439 is 93449532128.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82123594439 - 2³⁶ = 13404117703 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82123594739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41061797219 + 41061797220.

It is an arithmetic number, because the mean of its divisors is an integer number (41061797220).

Almost surely, 2^82123594439 is an apocalyptic number.

82123594439 is a deficient number, since it is larger than the sum of its proper divisors (1).

82123594439 is an equidigital number, since it uses as much as digits as its factorization.

82123594439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 50.

The spelling of 82123594439 in words is "eighty-two billion, one hundred twenty-three million, five hundred ninety-four thousand, four hundred thirty-nine".