30550320205 has 4 divisors (see below), whose sum is σ = 36660384252. Its totient is φ = 24440256160.

The previous prime is 30550320187. The next prime is 30550320223. The reversal of 30550320205 is 50202305503.

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

It is an interprime number because it is at equal distance from previous prime (30550320187) and next prime (30550320223).

It can be written as a sum of positive squares in 2 ways, for example, as 8715529449 + 21834790756 = 93357^2 + 147766^2 .

It is not a de Polignac number, because 30550320205 - 2²⁷ = 30416102477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30550320205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3055032016 + ... + 3055032025.

It is an arithmetic number, because the mean of its divisors is an integer number (9165096063).

Almost surely, 2^30550320205 is an apocalyptic number.

It is an amenable number.

30550320205 is a deficient number, since it is larger than the sum of its proper divisors (6110064047).

30550320205 is an equidigital number, since it uses as much as digits as its factorization.

30550320205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110064046.

The product of its (nonzero) digits is 4500, while the sum is 25.

Adding to 30550320205 its reverse (50202305503), we get a palindrome (80752625708).

The spelling of 30550320205 in words is "thirty billion, five hundred fifty million, three hundred twenty thousand, two hundred five".