30509405173 has 16 divisors (see below), whose sum is σ = 34665926400. Its totient is φ = 26618293440.

The previous prime is 30509405167. The next prime is 30509405177. The reversal of 30509405173 is 37150490503.

It is a cyclic number.

It is not a de Polignac number, because 30509405173 - 2⁵ = 30509405141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30509405177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36838 + ... + 249751.

It is an arithmetic number, because the mean of its divisors is an integer number (2166620400).

Almost surely, 2^30509405173 is an apocalyptic number.

It is an amenable number.

30509405173 is a deficient number, since it is larger than the sum of its proper divisors (4156521227).

30509405173 is a wasteful number, since it uses less digits than its factorization.

30509405173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287052.

The product of its (nonzero) digits is 56700, while the sum is 37.

Adding to 30509405173 its reverse (37150490503), we get a palindrome (67659895676).

The spelling of 30509405173 in words is "thirty billion, five hundred nine million, four hundred five thousand, one hundred seventy-three".