11123555553311 has 4 divisors (see below), whose sum is σ = 11225606521800. Its totient is φ = 11021504584824.

The previous prime is 11123555553269. The next prime is 11123555553323. The reversal of 11123555553311 is 11335555532111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11123555553311 - 2²⁶ = 11123488444447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123555553511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51025484081 + ... + 51025484298.

It is an arithmetic number, because the mean of its divisors is an integer number (2806401630450).

Almost surely, 2^{11123555553311} is an apocalyptic number.

11123555553311 is a deficient number, since it is larger than the sum of its proper divisors (102050968489).

11123555553311 is a wasteful number, since it uses less digits than its factorization.

11123555553311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102050968488.

The product of its digits is 168750, while the sum is 41.

It can be divided in two parts, 1112355 and 5553311, that added together give a palindrome (6665666).

The spelling of 11123555553311 in words is "eleven trillion, one hundred twenty-three billion, five hundred fifty-five million, five hundred fifty-three thousand, three hundred eleven".