11040412520 has 64 divisors (see below), whose sum is σ = 25730341200. Its totient is φ = 4263506688.

The previous prime is 11040412519. The next prime is 11040412541. The reversal of 11040412520 is 2521404011.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4217982916 + 6822429604 = 64946^2 + 82598^2 .

It is a super-2 number, since 2×11040412520² (a number of 21 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 11040412492 and 11040412501.

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, 969902 + ... + 981218.

Almost surely, 2^11040412520 is an apocalyptic number.

11040412520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11040412520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12865170600).

11040412520 is an abundant number, since it is smaller than the sum of its proper divisors (14689928680).

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

11040412520 is an equidigital number, since it uses as much as digits as its factorization.

11040412520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11415 (or 11353 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 11040412520 its reverse (2521404011), we get a palindrome (13561816531).

The spelling of 11040412520 in words is "eleven billion, forty million, four hundred twelve thousand, five hundred twenty".