67082085509 has 2 divisors, whose sum is σ = 67082085510. Its totient is φ = 67082085508.

The previous prime is 67082085491. The next prime is 67082085569. The reversal of 67082085509 is 90558028076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58027992100 + 9054093409 = 240890^2 + 95153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67082085509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67082085569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33541042754 + 33541042755.

It is an arithmetic number, because the mean of its divisors is an integer number (33541042755).

Almost surely, 2^67082085509 is an apocalyptic number.

It is an amenable number.

67082085509 is a deficient number, since it is larger than the sum of its proper divisors (1).

67082085509 is an equidigital number, since it uses as much as digits as its factorization.

67082085509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 67082085509 in words is "sixty-seven billion, eighty-two million, eighty-five thousand, five hundred nine".