11453320443 has 16 divisors (see below), whose sum is σ = 15600130560. Its totient is φ = 7471114656.

The previous prime is 11453320421. The next prime is 11453320457. The reversal of 11453320443 is 34402335411.

It is not a de Polignac number, because 11453320443 - 2¹⁰ = 11453319419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11453320443.

It is not an unprimeable number, because it can be changed into a prime (11453320243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683896 + ... + 700442.

It is an arithmetic number, because the mean of its divisors is an integer number (975008160).

Almost surely, 2^11453320443 is an apocalyptic number.

11453320443 is a deficient number, since it is larger than the sum of its proper divisors (4146810117).

11453320443 is a wasteful number, since it uses less digits than its factorization.

11453320443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21506.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 11453320443 its reverse (34402335411), we get a palindrome (45855655854).

The spelling of 11453320443 in words is "eleven billion, four hundred fifty-three million, three hundred twenty thousand, four hundred forty-three".