173307994449409 has 4 divisors (see below), whose sum is σ = 173312743560916. Its totient is φ = 173303245337904.

The previous prime is 173307994449397. The next prime is 173307994449431. The reversal of 173307994449409 is 904944499703371.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12221841200625 + 161086153248784 = 3495975^2 + 12691972^2 .

It is a cyclic number.

It is not a de Polignac number, because 173307994449409 - 2²⁵ = 173307960894977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173307994449509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2374501014 + ... + 2374573999.

It is an arithmetic number, because the mean of its divisors is an integer number (43328185890229).

Almost surely, 2^{173307994449409} is an apocalyptic number.

It is an amenable number.

173307994449409 is a deficient number, since it is larger than the sum of its proper divisors (4749111507).

173307994449409 is an equidigital number, since it uses as much as digits as its factorization.

173307994449409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749111506.

The product of its (nonzero) digits is 740710656, while the sum is 73.

The spelling of 173307994449409 in words is "one hundred seventy-three trillion, three hundred seven billion, nine hundred ninety-four million, four hundred forty-nine thousand, four hundred nine".