11155005430205 has 48 divisors (see below), whose sum is σ = 17159266422144. Its totient is φ = 6896547100800.

The previous prime is 11155005430201. The next prime is 11155005430223. The reversal of 11155005430205 is 50203450055111.

11155005430205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11155005430205 - 2² = 11155005430201 is a prime.

It is a super-2 number, since 2×11155005430205² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155005430201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40588121 + ... + 40862030.

It is an arithmetic number, because the mean of its divisors is an integer number (357484717128).

Almost surely, 2^{11155005430205} is an apocalyptic number.

It is an amenable number.

11155005430205 is a deficient number, since it is larger than the sum of its proper divisors (6004260991939).

11155005430205 is a wasteful number, since it uses less digits than its factorization.

11155005430205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81450226 (or 81450219 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

Adding to 11155005430205 its reverse (50203450055111), we get a palindrome (61358455485316).

The spelling of 11155005430205 in words is "eleven trillion, one hundred fifty-five billion, five million, four hundred thirty thousand, two hundred five".