11155113530 has 32 divisors (see below), whose sum is σ = 22026997440. Its totient is φ = 4033736320.

The previous prime is 11155113511. The next prime is 11155113559. The reversal of 11155113530 is 3531155111.

It is a self number, because there is not a number n which added to its sum of digits gives 11155113530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263579 + ... + 302958.

It is an arithmetic number, because the mean of its divisors is an integer number (688343670).

Almost surely, 2^11155113530 is an apocalyptic number.

11155113530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11155113530 is a deficient number, since it is larger than the sum of its proper divisors (10871883910).

11155113530 is a wasteful number, since it uses less digits than its factorization.

11155113530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566734.

The product of its (nonzero) digits is 1125, while the sum is 26.

Adding to 11155113530 its reverse (3531155111), we get a palindrome (14686268641).

The spelling of 11155113530 in words is "eleven billion, one hundred fifty-five million, one hundred thirteen thousand, five hundred thirty".