20443033445 has 8 divisors (see below), whose sum is σ = 24807277080. Its totient is φ = 16170668800.

The previous prime is 20443033433. The next prime is 20443033543. The reversal of 20443033445 is 54433034402.

It can be written as a sum of positive squares in 4 ways, for example, as 466603201 + 19976430244 = 21601^2 + 141338^2 .

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

It is not a de Polignac number, because 20443033445 - 2⁸ = 20443033189 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22969256 + ... + 22970145.

It is an arithmetic number, because the mean of its divisors is an integer number (3100909635).

Almost surely, 2^20443033445 is an apocalyptic number.

It is an amenable number.

20443033445 is a deficient number, since it is larger than the sum of its proper divisors (4364243635).

20443033445 is an equidigital number, since it uses as much as digits as its factorization.

20443033445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45939495.

The product of its (nonzero) digits is 69120, while the sum is 32.

Adding to 20443033445 its reverse (54433034402), we get a palindrome (74876067847).

The spelling of 20443033445 in words is "twenty billion, four hundred forty-three million, thirty-three thousand, four hundred forty-five".