11011420344 has 64 divisors (see below), whose sum is σ = 28087741440. Its totient is φ = 3596112000.

The previous prime is 11011420327. The next prime is 11011420369. The reversal of 11011420344 is 44302411011.

It is a self number, because there is not a number n which added to its sum of digits gives 11011420344.

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, 949509 + ... + 961035.

It is an arithmetic number, because the mean of its divisors is an integer number (438870960).

Almost surely, 2^11011420344 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 11011420344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14043870720).

11011420344 is an abundant number, since it is smaller than the sum of its proper divisors (17076321096).

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

11011420344 is a wasteful number, since it uses less digits than its factorization.

11011420344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12340 (or 12336 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 11011420344 its reverse (44302411011), we get a palindrome (55313831355).

The spelling of 11011420344 in words is "eleven billion, eleven million, four hundred twenty thousand, three hundred forty-four".