11444444423 has 4 divisors (see below), whose sum is σ = 11632058328. Its totient is φ = 11256830520.

The previous prime is 11444444419. The next prime is 11444444471. The reversal of 11444444423 is 32444444411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11444444423 - 2² = 11444444419 is a prime.

It is a super-2 number, since 2×11444444423² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11444446423) 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, 93806861 + ... + 93806982.

It is an arithmetic number, because the mean of its divisors is an integer number (2908014582).

Almost surely, 2^11444444423 is an apocalyptic number.

11444444423 is a deficient number, since it is larger than the sum of its proper divisors (187613905).

11444444423 is an equidigital number, since it uses as much as digits as its factorization.

11444444423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187613904.

The product of its digits is 98304, while the sum is 35.

Adding to 11444444423 its reverse (32444444411), we get a palindrome (43888888834).

The spelling of 11444444423 in words is "eleven billion, four hundred forty-four million, four hundred forty-four thousand, four hundred twenty-three".