12535203173 has 2 divisors, whose sum is σ = 12535203174. Its totient is φ = 12535203172.

The previous prime is 12535203169. The next prime is 12535203209. The reversal of 12535203173 is 37130253521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6935225284 + 5599977889 = 83278^2 + 74833^2 .

It is an emirp because it is prime and its reverse (37130253521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12535203173 - 2² = 12535203169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12535203133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6267601586 + 6267601587.

It is an arithmetic number, because the mean of its divisors is an integer number (6267601587).

Almost surely, 2^12535203173 is an apocalyptic number.

It is an amenable number.

12535203173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12535203173 is an equidigital number, since it uses as much as digits as its factorization.

12535203173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 32.

Adding to 12535203173 its reverse (37130253521), we get a palindrome (49665456694).

The spelling of 12535203173 in words is "twelve billion, five hundred thirty-five million, two hundred three thousand, one hundred seventy-three".