7091200009 has 2 divisors, whose sum is σ = 7091200010. Its totient is φ = 7091200008.

The previous prime is 7091199971. The next prime is 7091200037. The reversal of 7091200009 is 9000021907.

It is an a-pointer prime, because the next prime (7091200037) can be obtained adding 7091200009 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5909765625 + 1181434384 = 76875^2 + 34372^2 .

It is a cyclic number.

It is not a de Polignac number, because 7091200009 - 2⁷ = 7091199881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7091200009.

It is not a weakly prime, because it can be changed into another prime (7091200099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3545600004 + 3545600005.

It is an arithmetic number, because the mean of its divisors is an integer number (3545600005).

Almost surely, 2^7091200009 is an apocalyptic number.

It is an amenable number.

7091200009 is a deficient number, since it is larger than the sum of its proper divisors (1).

7091200009 is an equidigital number, since it uses as much as digits as its factorization.

7091200009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 7091200009 is about 84209.2632018592. The cubic root of 7091200009 is about 1921.2029506672.

The spelling of 7091200009 in words is "seven billion, ninety-one million, two hundred thousand, nine".