11143351555 has 16 divisors (see below), whose sum is σ = 15285504960. Its totient is φ = 7639558272.

The previous prime is 11143351507. The next prime is 11143351577. The reversal of 11143351555 is 55515334111.

It is a cyclic number.

It is not a de Polignac number, because 11143351555 - 2¹⁷ = 11143220483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11143351555.

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, 150937 + ... + 212293.

It is an arithmetic number, because the mean of its divisors is an integer number (955344060).

Almost surely, 2^11143351555 is an apocalyptic number.

11143351555 is a deficient number, since it is larger than the sum of its proper divisors (4142153405).

11143351555 is an equidigital number, since it uses as much as digits as its factorization.

11143351555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66558.

The product of its digits is 22500, while the sum is 34.

Adding to 11143351555 its reverse (55515334111), we get a palindrome (66658685666).

The spelling of 11143351555 in words is "eleven billion, one hundred forty-three million, three hundred fifty-one thousand, five hundred fifty-five".