11552320340 has 96 divisors (see below), whose sum is σ = 28001635200. Its totient is φ = 3959262720.

The previous prime is 11552320313. The next prime is 11552320343. The reversal of 11552320340 is 4302325511.

It is a happy number.

It is a super-2 number, since 2×11552320340² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11552320343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 816446 + ... + 830474.

It is an arithmetic number, because the mean of its divisors is an integer number (291683700).

Almost surely, 2^11552320340 is an apocalyptic number.

11552320340 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 11552320340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14000817600).

11552320340 is an abundant number, since it is smaller than the sum of its proper divisors (16449314860).

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

11552320340 is a wasteful number, since it uses less digits than its factorization.

11552320340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14265 (or 14263 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 11552320340 its reverse (4302325511), we get a palindrome (15854645851).

The spelling of 11552320340 in words is "eleven billion, five hundred fifty-two million, three hundred twenty thousand, three hundred forty".