20440042204244 has 24 divisors (see below), whose sum is σ = 38529191059968. Its totient is φ = 9432011005920.

The previous prime is 20440042204117. The next prime is 20440042204303. The reversal of 20440042204244 is 44240224004402.

It is a super-2 number, since 2×20440042204244² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20440042204244.

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, 38370992 + ... + 38900039.

It is an arithmetic number, because the mean of its divisors is an integer number (1605382960832).

Almost surely, 2^{20440042204244} is an apocalyptic number.

It is an amenable number.

20440042204244 is a deficient number, since it is larger than the sum of its proper divisors (18089148855724).

20440042204244 is a wasteful number, since it uses less digits than its factorization.

20440042204244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77276135 (or 77276133 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 20440042204244 its reverse (44240224004402), we get a palindrome (64680266208646).

The spelling of 20440042204244 in words is "twenty trillion, four hundred forty billion, forty-two million, two hundred four thousand, two hundred forty-four".