11173385817109 has 2 divisors, whose sum is σ = 11173385817110. Its totient is φ = 11173385817108.

The previous prime is 11173385817101. The next prime is 11173385817127. The reversal of 11173385817109 is 90171858337111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10907021446084 + 266364371025 = 3302578^2 + 516105^2 .

It is a cyclic number.

It is not a de Polignac number, because 11173385817109 - 2³ = 11173385817101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11173385817109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11173385817101) 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, 5586692908554 + 5586692908555.

It is an arithmetic number, because the mean of its divisors is an integer number (5586692908555).

Almost surely, 2^{11173385817109} is an apocalyptic number.

It is an amenable number.

11173385817109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11173385817109 is an equidigital number, since it uses as much as digits as its factorization.

11173385817109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 55.

The spelling of 11173385817109 in words is "eleven trillion, one hundred seventy-three billion, three hundred eighty-five million, eight hundred seventeen thousand, one hundred nine".