11444450555 has 4 divisors (see below), whose sum is σ = 13733340672. Its totient is φ = 9155560440.

The previous prime is 11444450551. The next prime is 11444450569. The reversal of 11444450555 is 55505444411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55505444411 = 191 ⋅290604421.

It is not a de Polignac number, because 11444450555 - 2² = 11444450551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11444450551) 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, 1144445051 + ... + 1144445060.

It is an arithmetic number, because the mean of its divisors is an integer number (3433335168).

Almost surely, 2^11444450555 is an apocalyptic number.

11444450555 is a deficient number, since it is larger than the sum of its proper divisors (2288890117).

11444450555 is an equidigital number, since it uses as much as digits as its factorization.

11444450555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288890116.

The product of its (nonzero) digits is 160000, while the sum is 38.

Adding to 11444450555 its reverse (55505444411), we get a palindrome (66949894966).

The spelling of 11444450555 in words is "eleven billion, four hundred forty-four million, four hundred fifty thousand, five hundred fifty-five".