20440242220004 has 24 divisors (see below), whose sum is σ = 37878136499448. Its totient is φ = 9618030840320.

The previous prime is 20440242219983. The next prime is 20440242220121. The reversal of 20440242220004 is 40002224204402.

It can be written as a sum of positive squares in 4 ways, for example, as 12184274397604 + 8255967822400 = 3490598^2 + 2873320^2 .

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, 13439807 + ... + 14883174.

It is an arithmetic number, because the mean of its divisors is an integer number (1578255687477).

Almost surely, 2^{20440242220004} is an apocalyptic number.

It is an amenable number.

20440242220004 is a deficient number, since it is larger than the sum of its proper divisors (17437894279444).

20440242220004 is a wasteful number, since it uses less digits than its factorization.

20440242220004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28333615 (or 28333613 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 20440242220004 its reverse (40002224204402), we get a palindrome (60442466424406).

The spelling of 20440242220004 in words is "twenty trillion, four hundred forty billion, two hundred forty-two million, two hundred twenty thousand, four".