11143351556 has 12 divisors (see below), whose sum is σ = 20647975068. Its totient is φ = 5243930112.

The previous prime is 11143351507. The next prime is 11143351577. The reversal of 11143351556 is 65515334111.

It can be written as a sum of positive squares in 2 ways, for example, as 5720501956 + 5422849600 = 75634^2 + 73640^2 .

It is a super-2 number, since 2×11143351556² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81936341 + ... + 81936476.

It is an arithmetic number, because the mean of its divisors is an integer number (1720664589).

Almost surely, 2^11143351556 is an apocalyptic number.

It is an amenable number.

11143351556 is a deficient number, since it is larger than the sum of its proper divisors (9504623512).

11143351556 is a wasteful number, since it uses less digits than its factorization.

11143351556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163872838 (or 163872836 counting only the distinct ones).

The product of its digits is 27000, while the sum is 35.

Adding to 11143351556 its reverse (65515334111), we get a palindrome (76658685667).

The spelling of 11143351556 in words is "eleven billion, one hundred forty-three million, three hundred fifty-one thousand, five hundred fifty-six".