143221443444 has 18 divisors (see below), whose sum is σ = 362031982130. Its totient is φ = 47740481136.

The previous prime is 143221443439. The next prime is 143221443467. The reversal of 143221443444 is 444344122341.

143221443444 is a `hidden beast` number, since 1 + 4 + 3 + 2 + 214 + 434 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 117778003344 + 25443440100 = 343188^2 + 159510^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×143221443444² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3978373429 = 143221443444 / (1 + 4 + 3 + 2 + 2 + 1 + 4 + 4 + 3 + 4 + 4 + 4).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 143221443399 and 143221443408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1989186679 + ... + 1989186750.

Almost surely, 2^143221443444 is an apocalyptic number.

It is an amenable number.

143221443444 is an abundant number, since it is smaller than the sum of its proper divisors (218810538686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143221443444 is a wasteful number, since it uses less digits than its factorization.

143221443444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3978373439 (or 3978373434 counting only the distinct ones).

The product of its digits is 147456, while the sum is 36.

Adding to 143221443444 its reverse (444344122341), we get a palindrome (587565565785).

The spelling of 143221443444 in words is "one hundred forty-three billion, two hundred twenty-one million, four hundred forty-three thousand, four hundred forty-four".