20324202225505 has 8 divisors (see below), whose sum is σ = 24630518341224. Its totient is φ = 16098378000000.

The previous prime is 20324202225469. The next prime is 20324202225571. The reversal of 20324202225505 is 50552220242302.

It can be written as a sum of positive squares in 4 ways, for example, as 12982985382481 + 7341216843024 = 3603191^2 + 2709468^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20324202225505 - 2¹⁵ = 20324202192737 is a prime.

It is a super-2 number, since 2×20324202225505² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

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 in 7 ways as a sum of consecutive naturals, for example, 20122971996 + ... + 20122973005.

It is an arithmetic number, because the mean of its divisors is an integer number (3078814792653).

Almost surely, 2^{20324202225505} is an apocalyptic number.

It is an amenable number.

20324202225505 is a deficient number, since it is larger than the sum of its proper divisors (4306316115719).

20324202225505 is a wasteful number, since it uses less digits than its factorization.

20324202225505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40245945107.

The product of its (nonzero) digits is 96000, while the sum is 34.

Adding to 20324202225505 its reverse (50552220242302), we get a palindrome (70876422467807).

The spelling of 20324202225505 in words is "twenty trillion, three hundred twenty-four billion, two hundred two million, two hundred twenty-five thousand, five hundred five".