30205105205 has 8 divisors (see below), whose sum is σ = 39541228704. Its totient is φ = 21967349200.

The previous prime is 30205105193. The next prime is 30205105261. The reversal of 30205105205 is 50250150203.

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

It is not a de Polignac number, because 30205105205 - 2³² = 25910137909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274591811 + ... + 274591920.

It is an arithmetic number, because the mean of its divisors is an integer number (4942653588).

Almost surely, 2^30205105205 is an apocalyptic number.

It is an amenable number.

30205105205 is a deficient number, since it is larger than the sum of its proper divisors (9336123499).

30205105205 is a wasteful number, since it uses less digits than its factorization.

30205105205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549183747.

The product of its (nonzero) digits is 1500, while the sum is 23.

Adding to 30205105205 its reverse (50250150203), we get a palindrome (80455255408).

The spelling of 30205105205 in words is "thirty billion, two hundred five million, one hundred five thousand, two hundred five".