82807580389 has 2 divisors, whose sum is σ = 82807580390. Its totient is φ = 82807580388.

The previous prime is 82807580371. The next prime is 82807580413. The reversal of 82807580389 is 98308570828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66787615489 + 16019964900 = 258433^2 + 126570^2 .

It is a cyclic number.

It is not a de Polignac number, because 82807580389 - 2¹¹ = 82807578341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82807580189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41403790194 + 41403790195.

It is an arithmetic number, because the mean of its divisors is an integer number (41403790195).

Almost surely, 2^82807580389 is an apocalyptic number.

It is an amenable number.

82807580389 is a deficient number, since it is larger than the sum of its proper divisors (1).

82807580389 is an equidigital number, since it uses as much as digits as its factorization.

82807580389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7741440, while the sum is 58.

The spelling of 82807580389 in words is "eighty-two billion, eight hundred seven million, five hundred eighty thousand, three hundred eighty-nine".