11111533440424 has 16 divisors (see below), whose sum is σ = 21930658106400. Its totient is φ = 5263357945392.

The previous prime is 11111533440421. The next prime is 11111533440437. The reversal of 11111533440424 is 42404433511111.

It is a self number, because there is not a number n which added to its sum of digits gives 11111533440424.

It is not an unprimeable number, because it can be changed into a prime (11111533440421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36551096692 + ... + 36551096995.

It is an arithmetic number, because the mean of its divisors is an integer number (1370666131650).

Almost surely, 2^{11111533440424} is an apocalyptic number.

It is an amenable number.

11111533440424 is a deficient number, since it is larger than the sum of its proper divisors (10819124665976).

11111533440424 is a wasteful number, since it uses less digits than its factorization.

11111533440424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73102193712 (or 73102193708 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 11111533440424 its reverse (42404433511111), we get a palindrome (53515966951535).

The spelling of 11111533440424 in words is "eleven trillion, one hundred eleven billion, five hundred thirty-three million, four hundred forty thousand, four hundred twenty-four".