20033005444 has 9 divisors (see below), whose sum is σ = 35058254917. Its totient is φ = 10016361184.

The previous prime is 20033005397. The next prime is 20033005453. The reversal of 20033005444 is 44450033002.

The square root of 20033005444 is 141538.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 18262279044 + 1770726400 = 135138^2 + 42080^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 247692 + ... + 318460.

Almost surely, 2^20033005444 is an apocalyptic number.

20033005444 is the 141538-th square number.

It is an amenable number.

20033005444 is a deficient number, since it is larger than the sum of its proper divisors (15025249473).

20033005444 is an frugal number, since it uses more digits than its factorization.

20033005444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141542 (or 70771 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Multiplying 20033005444 by its sum of digits (25), we get a square (500825136100 = 707690²).

Adding to 20033005444 its reverse (44450033002), we get a palindrome (64483038446).

The spelling of 20033005444 in words is "twenty billion, thirty-three million, five thousand, four hundred forty-four".