2143444555 has 16 divisors (see below), whose sum is σ = 2953522944. Its totient is φ = 1462819680.

The previous prime is 2143444553. The next prime is 2143444573. The reversal of 2143444555 is 5554443412.

It is not a de Polignac number, because 2143444555 - 2¹ = 2143444553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143444553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137737 + ... + 152506.

It is an arithmetic number, because the mean of its divisors is an integer number (184595184).

Almost surely, 2^2143444555 is an apocalyptic number.

2143444555 is a deficient number, since it is larger than the sum of its proper divisors (810078389).

2143444555 is a wasteful number, since it uses less digits than its factorization.

2143444555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290466.

The product of its digits is 192000, while the sum is 37.

The square root of 2143444555 is about 46297.3493301722. The cubic root of 2143444555 is about 1289.3497824861.

Adding to 2143444555 its reverse (5554443412), we get a palindrome (7697887967).

The spelling of 2143444555 in words is "two billion, one hundred forty-three million, four hundred forty-four thousand, five hundred fifty-five".