20053505444540 has 24 divisors (see below), whose sum is σ = 42112569574320. Its totient is φ = 8021362531968.

The previous prime is 20053505444503. The next prime is 20053505444549. The reversal of 20053505444540 is 4544450535002.

It is a super-2 number, since 2×20053505444540² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20053505444549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1854584 + ... + 6598976.

It is an arithmetic number, because the mean of its divisors is an integer number (1754690398930).

Almost surely, 2^{20053505444540} is an apocalyptic number.

20053505444540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20053505444540 is an abundant number, since it is smaller than the sum of its proper divisors (22059064129780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20053505444540 is a wasteful number, since it uses less digits than its factorization.

20053505444540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4955741 (or 4955739 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 41.

Adding to 20053505444540 its reverse (4544450535002), we get a palindrome (24597955979542).

The spelling of 20053505444540 in words is "twenty trillion, fifty-three billion, five hundred five million, four hundred forty-four thousand, five hundred forty".