7106138509 has 2 divisors, whose sum is σ = 7106138510. Its totient is φ = 7106138508.

The previous prime is 7106138503. The next prime is 7106138527. The reversal of 7106138509 is 9058316017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3718316484 + 3387822025 = 60978^2 + 58205^2 .

It is a cyclic number.

It is not a de Polignac number, because 7106138509 - 2⁵ = 7106138477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7106138503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3553069254 + 3553069255.

It is an arithmetic number, because the mean of its divisors is an integer number (3553069255).

Almost surely, 2^7106138509 is an apocalyptic number.

It is an amenable number.

7106138509 is a deficient number, since it is larger than the sum of its proper divisors (1).

7106138509 is an equidigital number, since it uses as much as digits as its factorization.

7106138509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 7106138509 is about 84297.9152114689. The cubic root of 7106138509 is about 1922.5510892283.

The spelling of 7106138509 in words is "seven billion, one hundred six million, one hundred thirty-eight thousand, five hundred nine".