111444555553 has 8 divisors (see below), whose sum is σ = 115046848256. Its totient is φ = 107842719600.

The previous prime is 111444555457. The next prime is 111444555611. The reversal of 111444555553 is 355555444111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111444555553 - 2⁹ = 111444555041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111444555353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421675 + ... + 633007.

It is an arithmetic number, because the mean of its divisors is an integer number (14380856032).

Almost surely, 2^111444555553 is an apocalyptic number.

It is an amenable number.

111444555553 is a deficient number, since it is larger than the sum of its proper divisors (3602292703).

111444555553 is a wasteful number, since it uses less digits than its factorization.

111444555553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228375.

The product of its digits is 600000, while the sum is 43.

Adding to 111444555553 its reverse (355555444111), we get a palindrome (466999999664).

The spelling of 111444555553 in words is "one hundred eleven billion, four hundred forty-four million, five hundred fifty-five thousand, five hundred fifty-three".