11155133512 has 16 divisors (see below), whose sum is σ = 20928676860. Its totient is φ = 5574153024.

The previous prime is 11155133503. The next prime is 11155133551. The reversal of 11155133512 is 21533155111.

It can be written as a sum of positive squares in 2 ways, for example, as 7879402756 + 3275730756 = 88766^2 + 57234^2 .

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, 412803 + ... + 438994.

Almost surely, 2^11155133512 is an apocalyptic number.

It is an amenable number.

11155133512 is a deficient number, since it is larger than the sum of its proper divisors (9773543348).

11155133512 is a wasteful number, since it uses less digits than its factorization.

11155133512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853440 (or 853436 counting only the distinct ones).

The product of its digits is 2250, while the sum is 28.

Adding to 11155133512 its reverse (21533155111), we get a palindrome (32688288623).

The spelling of 11155133512 in words is "eleven billion, one hundred fifty-five million, one hundred thirty-three thousand, five hundred twelve".