20440454533244 has 12 divisors (see below), whose sum is σ = 35841072048600. Its totient is φ = 10200148233648.

The previous prime is 20440454533229. The next prime is 20440454533271. The reversal of 20440454533244 is 44233545404402.

It is a junction number, because it is equal to n+sod(n) for n = 20440454533195 and 20440454533204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5019755954 + ... + 5019760025.

It is an arithmetic number, because the mean of its divisors is an integer number (2986756004050).

Almost surely, 2^{20440454533244} is an apocalyptic number.

It is an amenable number.

20440454533244 is a deficient number, since it is larger than the sum of its proper divisors (15400617515356).

20440454533244 is a wasteful number, since it uses less digits than its factorization.

20440454533244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10039516492 (or 10039516490 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 44.

Adding to 20440454533244 its reverse (44233545404402), we get a palindrome (64673999937646).

The spelling of 20440454533244 in words is "twenty trillion, four hundred forty billion, four hundred fifty-four million, five hundred thirty-three thousand, two hundred forty-four".