11143455544 has 64 divisors (see below), whose sum is σ = 22921799040. Its totient is φ = 5047574400.

The previous prime is 11143455497. The next prime is 11143455577. The reversal of 11143455544 is 44555434111.

It is a super-2 number, since 2×11143455544² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 1969119 + ... + 1974769.

It is an arithmetic number, because the mean of its divisors is an integer number (358153110).

Almost surely, 2^11143455544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11143455544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11460899520).

11143455544 is an abundant number, since it is smaller than the sum of its proper divisors (11778343496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11143455544 is a wasteful number, since it uses less digits than its factorization.

11143455544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6020 (or 6016 counting only the distinct ones).

The product of its digits is 96000, while the sum is 37.

Adding to 11143455544 its reverse (44555434111), we get a palindrome (55698889655).

The spelling of 11143455544 in words is "eleven billion, one hundred forty-three million, four hundred fifty-five thousand, five hundred forty-four".