11323454440 has 16 divisors (see below), whose sum is σ = 25477772580. Its totient is φ = 4529381760.

The previous prime is 11323454437. The next prime is 11323454447. The reversal of 11323454440 is 4445432311.

It can be written as a sum of positive squares in 2 ways, for example, as 11247450916 + 76003524 = 106054^2 + 8718^2 .

It is not an unprimeable number, because it can be changed into a prime (11323454447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141543141 + ... + 141543220.

Almost surely, 2^11323454440 is an apocalyptic number.

11323454440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11323454440 is an abundant number, since it is smaller than the sum of its proper divisors (14154318140).

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

11323454440 is a wasteful number, since it uses less digits than its factorization.

11323454440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283086372 (or 283086368 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 11323454440 its reverse (4445432311), we get a palindrome (15768886751).

The spelling of 11323454440 in words is "eleven billion, three hundred twenty-three million, four hundred fifty-four thousand, four hundred forty".