20440402442024 has 8 divisors (see below), whose sum is σ = 38325754578810. Its totient is φ = 10220201221008.

The previous prime is 20440402441933. The next prime is 20440402442071. The reversal of 20440402442024 is 42024420404402.

It can be written as a sum of positive squares in only one way, i.e., 16425917352100 + 4014485089924 = 4052890^2 + 2003618^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277525152619 + ... + 1277525152634.

Almost surely, 2^{20440402442024} is an apocalyptic number.

It is an amenable number.

20440402442024 is a deficient number, since it is larger than the sum of its proper divisors (17885352136786).

20440402442024 is a wasteful number, since it uses less digits than its factorization.

20440402442024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555050305259 (or 2555050305255 counting only the distinct ones).

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

Adding to 20440402442024 its reverse (42024420404402), we get a palindrome (62464822846426).

The spelling of 20440402442024 in words is "twenty trillion, four hundred forty billion, four hundred two million, four hundred forty-two thousand, twenty-four".