11321346440 has 32 divisors (see below), whose sum is σ = 25853230080. Its totient is φ = 4460947392.

The previous prime is 11321346391. The next prime is 11321346451. The reversal of 11321346440 is 4464312311.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2109512 + ... + 2114871.

It is an arithmetic number, because the mean of its divisors is an integer number (807913440).

Almost surely, 2^11321346440 is an apocalyptic number.

11321346440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11321346440 is an abundant number, since it is smaller than the sum of its proper divisors (14531883640).

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

11321346440 is a wasteful number, since it uses less digits than its factorization.

11321346440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224461 (or 4224457 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 11321346440 its reverse (4464312311), we get a palindrome (15785658751).

The spelling of 11321346440 in words is "eleven billion, three hundred twenty-one million, three hundred forty-six thousand, four hundred forty".