11023005440 has 36 divisors (see below), whose sum is σ = 26403545784. Its totient is φ = 4409201664.

The previous prime is 11023005421. The next prime is 11023005443. The reversal of 11023005440 is 4450032011.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11023005443) 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, 4304582 + ... + 4307141.

Almost surely, 2^11023005440 is an apocalyptic number.

11023005440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11023005440 is an abundant number, since it is smaller than the sum of its proper divisors (15380540344).

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

11023005440 is an frugal number, since it uses more digits than its factorization.

11023005440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8611744 (or 8611730 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 11023005440 its reverse (4450032011), we get a palindrome (15473037451).

The spelling of 11023005440 in words is "eleven billion, twenty-three million, five thousand, four hundred forty".