11205430605 has 24 divisors (see below), whose sum is σ = 20267215488. Its totient is φ = 5716393056.

The previous prime is 11205430603. The next prime is 11205430619. The reversal of 11205430605 is 50603450211.

11205430605 is a `hidden beast` number, since 1 + 1 + 2 + 0 + 54 + 3 + 0 + 605 = 666.

It is not a de Polignac number, because 11205430605 - 2¹ = 11205430603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11205430603) 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 23 ways as a sum of consecutive naturals, for example, 5412217 + ... + 5414286.

It is an arithmetic number, because the mean of its divisors is an integer number (844467312).

Almost surely, 2^11205430605 is an apocalyptic number.

11205430605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11205430605 is a deficient number, since it is larger than the sum of its proper divisors (9061784883).

11205430605 is a wasteful number, since it uses less digits than its factorization.

11205430605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10826537 (or 10826534 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 11205430605 its reverse (50603450211), we get a palindrome (61808880816).

The spelling of 11205430605 in words is "eleven billion, two hundred five million, four hundred thirty thousand, six hundred five".