173145381603 has 8 divisors (see below), whose sum is σ = 231076472400. Its totient is φ = 115322272608.

The previous prime is 173145381601. The next prime is 173145381611. The reversal of 173145381603 is 306183541371.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 173145381603 - 2¹ = 173145381601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (173145381601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26991708 + ... + 26998121.

It is an arithmetic number, because the mean of its divisors is an integer number (28884559050).

Almost surely, 2^173145381603 is an apocalyptic number.

173145381603 is a deficient number, since it is larger than the sum of its proper divisors (57931090797).

173145381603 is a wasteful number, since it uses less digits than its factorization.

173145381603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53990901.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 173145381603 in words is "one hundred seventy-three billion, one hundred forty-five million, three hundred eighty-one thousand, six hundred three".