7112771909 has 2 divisors, whose sum is σ = 7112771910. Its totient is φ = 7112771908.

The previous prime is 7112771903. The next prime is 7112771927. The reversal of 7112771909 is 9091772117.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6848059009 + 264712900 = 82753^2 + 16270^2 .

It is a cyclic number.

It is not a de Polignac number, because 7112771909 - 2⁴ = 7112771893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7112771909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7112771903) 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, 3556385954 + 3556385955.

It is an arithmetic number, because the mean of its divisors is an integer number (3556385955).

Almost surely, 2^7112771909 is an apocalyptic number.

It is an amenable number.

7112771909 is a deficient number, since it is larger than the sum of its proper divisors (1).

7112771909 is an equidigital number, since it uses as much as digits as its factorization.

7112771909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55566, while the sum is 44.

The square root of 7112771909 is about 84337.2510163807. The cubic root of 7112771909 is about 1923.1491207386.

The spelling of 7112771909 in words is "seven billion, one hundred twelve million, seven hundred seventy-one thousand, nine hundred nine".