11173528789 has 2 divisors, whose sum is σ = 11173528790. Its totient is φ = 11173528788.

The previous prime is 11173528787. The next prime is 11173528811. The reversal of 11173528789 is 98782537111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7719028164 + 3454500625 = 87858^2 + 58775^2 .

It is a cyclic number.

It is not a de Polignac number, because 11173528789 - 2¹ = 11173528787 is a prime.

It is a super-2 number, since 2×11173528789² (a number of 21 digits) contains 22 as substring.

Together with 11173528787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11173528787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5586764394 + 5586764395.

It is an arithmetic number, because the mean of its divisors is an integer number (5586764395).

Almost surely, 2^11173528789 is an apocalyptic number.

It is an amenable number.

11173528789 is a deficient number, since it is larger than the sum of its proper divisors (1).

11173528789 is an equidigital number, since it uses as much as digits as its factorization.

11173528789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 52.

The spelling of 11173528789 in words is "eleven billion, one hundred seventy-three million, five hundred twenty-eight thousand, seven hundred eighty-nine".