11109918144 has 112 divisors (see below), whose sum is σ = 31703162400. Its totient is φ = 3413360640.

The previous prime is 11109918143. The next prime is 11109918161. The reversal of 11109918144 is 44181990111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11109918143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1896532 + ... + 1902380.

It is an arithmetic number, because the mean of its divisors is an integer number (283063950).

Almost surely, 2^11109918144 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 11109918144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15851581200).

11109918144 is an abundant number, since it is smaller than the sum of its proper divisors (20593244256).

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

11109918144 is a wasteful number, since it uses less digits than its factorization.

11109918144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638 (or 6628 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 39.

The spelling of 11109918144 in words is "eleven billion, one hundred nine million, nine hundred eighteen thousand, one hundred forty-four".