11530330440 has 64 divisors (see below), whose sum is σ = 34599216960. Its totient is φ = 3074023680.

The previous prime is 11530330391. The next prime is 11530330451. The reversal of 11530330440 is 4403303511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 11530330440.

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, 658195 + ... + 675485.

It is an arithmetic number, because the mean of its divisors is an integer number (540612765).

Almost surely, 2^11530330440 is an apocalyptic number.

11530330440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11530330440 is an abundant number, since it is smaller than the sum of its proper divisors (23068886520).

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

11530330440 is a wasteful number, since it uses less digits than its factorization.

11530330440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22862 (or 22858 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 11530330440 its reverse (4403303511), we get a palindrome (15933633951).

The spelling of 11530330440 in words is "eleven billion, five hundred thirty million, three hundred thirty thousand, four hundred forty".