173452128150409 has 2 divisors, whose sum is σ = 173452128150410. Its totient is φ = 173452128150408.

The previous prime is 173452128150407. The next prime is 173452128150527. The reversal of 173452128150409 is 904051821254371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154358260810000 + 19093867340409 = 12424100^2 + 4369653^2 .

It is an emirp because it is prime and its reverse (904051821254371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 173452128150409 - 2¹ = 173452128150407 is a prime.

Together with 173452128150407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (173452128150407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86726064075204 + 86726064075205.

It is an arithmetic number, because the mean of its divisors is an integer number (86726064075205).

Almost surely, 2^{173452128150409} is an apocalyptic number.

It is an amenable number.

173452128150409 is a deficient number, since it is larger than the sum of its proper divisors (1).

173452128150409 is an equidigital number, since it uses as much as digits as its factorization.

173452128150409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 173452128150409 in words is "one hundred seventy-three trillion, four hundred fifty-two billion, one hundred twenty-eight million, one hundred fifty thousand, four hundred nine".