11320545440 has 24 divisors (see below), whose sum is σ = 26744788980. Its totient is φ = 4528218112.

The previous prime is 11320545433. The next prime is 11320545499. The reversal of 11320545440 is 4454502311.

It can be written as a sum of positive squares in 2 ways, for example, as 11175872656 + 144672784 = 105716^2 + 12028^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35376545 + ... + 35376864.

Almost surely, 2^11320545440 is an apocalyptic number.

11320545440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11320545440 is an abundant number, since it is smaller than the sum of its proper divisors (15424243540).

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

11320545440 is an equidigital number, since it uses as much as digits as its factorization.

11320545440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70753424 (or 70753416 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 11320545440 in words is "eleven billion, three hundred twenty million, five hundred forty-five thousand, four hundred forty".