20440551444052 has 12 divisors (see below), whose sum is σ = 35872299208116. Its totient is φ = 10191323098880.

The previous prime is 20440551444011. The next prime is 20440551444059. The reversal of 20440551444052 is 25044415504402.

It can be written as a sum of positive squares in 2 ways, for example, as 3873079104196 + 16567472339856 = 1968014^2 + 4070316^2 .

It is a super-2 number, since 2×20440551444052² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20440551443996 and 20440551444014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440551444059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7238154199 + ... + 7238157022.

It is an arithmetic number, because the mean of its divisors is an integer number (2989358267343).

Almost surely, 2^{20440551444052} is an apocalyptic number.

It is an amenable number.

20440551444052 is a deficient number, since it is larger than the sum of its proper divisors (15431747764064).

20440551444052 is a wasteful number, since it uses less digits than its factorization.

20440551444052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14476311578 (or 14476311576 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 40.

Adding to 20440551444052 its reverse (25044415504402), we get a palindrome (45484966948454).

The spelling of 20440551444052 in words is "twenty trillion, four hundred forty billion, five hundred fifty-one million, four hundred forty-four thousand, fifty-two".