30000505173 has 4 divisors (see below), whose sum is σ = 40000673568. Its totient is φ = 20000336780.

The previous prime is 30000505153. The next prime is 30000505207. The reversal of 30000505173 is 37150500003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37150500003 = 3 ⋅12383500001.

It is a cyclic number.

It is not a de Polignac number, because 30000505173 - 2⁶ = 30000505109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000505123) 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 in 3 ways as a sum of consecutive naturals, for example, 5000084193 + ... + 5000084198.

It is an arithmetic number, because the mean of its divisors is an integer number (10000168392).

Almost surely, 2^30000505173 is an apocalyptic number.

It is an amenable number.

30000505173 is a deficient number, since it is larger than the sum of its proper divisors (10000168395).

30000505173 is a wasteful number, since it uses less digits than its factorization.

30000505173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000168394.

The product of its (nonzero) digits is 1575, while the sum is 24.

The spelling of 30000505173 in words is "thirty billion, five hundred five thousand, one hundred seventy-three".