82042080709 has 2 divisors, whose sum is σ = 82042080710. Its totient is φ = 82042080708.

The previous prime is 82042080683. The next prime is 82042080713. The reversal of 82042080709 is 90708024028.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81394378209 + 647702500 = 285297^2 + 25450^2 .

It is a cyclic number.

It is not a de Polignac number, because 82042080709 - 2⁵ = 82042080677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82042080749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41021040354 + 41021040355.

It is an arithmetic number, because the mean of its divisors is an integer number (41021040355).

Almost surely, 2^82042080709 is an apocalyptic number.

It is an amenable number.

82042080709 is a deficient number, since it is larger than the sum of its proper divisors (1).

82042080709 is an equidigital number, since it uses as much as digits as its factorization.

82042080709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 82042080709 in words is "eighty-two billion, forty-two million, eighty thousand, seven hundred nine".