11011111110173 has 2 divisors, whose sum is σ = 11011111110174. Its totient is φ = 11011111110172.

The previous prime is 11011111110143. The next prime is 11011111110221. The reversal of 11011111110173 is 37101111111011.

It is a happy number.

11011111110173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7219608946489 + 3791502163684 = 2686933^2 + 1947178^2 .

It is an emirp because it is prime and its reverse (37101111111011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11011111110173 - 2²⁸ = 11010842674717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011111110113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505555555086 + 5505555555087.

It is an arithmetic number, because the mean of its divisors is an integer number (5505555555087).

Almost surely, 2^{11011111110173} is an apocalyptic number.

It is an amenable number.

11011111110173 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011111110173 is an equidigital number, since it uses as much as digits as its factorization.

11011111110173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21, while the sum is 20.

Adding to 11011111110173 its reverse (37101111111011), we get a palindrome (48112222221184).

The spelling of 11011111110173 in words is "eleven trillion, eleven billion, one hundred eleven million, one hundred ten thousand, one hundred seventy-three".