20443323444 has 24 divisors (see below), whose sum is σ = 47804574048. Its totient is φ = 6799657440.

The previous prime is 20443323431. The next prime is 20443323491. The reversal of 20443323444 is 44432334402.

It is a super-2 number, since 2×20443323444² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1842202 + ... + 1853265.

It is an arithmetic number, because the mean of its divisors is an integer number (1991857252).

Almost surely, 2^20443323444 is an apocalyptic number.

It is an amenable number.

20443323444 is an abundant number, since it is smaller than the sum of its proper divisors (27361250604).

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

20443323444 is a wasteful number, since it uses less digits than its factorization.

20443323444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695935 (or 3695933 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 33.

Adding to 20443323444 its reverse (44432334402), we get a palindrome (64875657846).

The spelling of 20443323444 in words is "twenty billion, four hundred forty-three million, three hundred twenty-three thousand, four hundred forty-four".