20004223209953 has 2 divisors, whose sum is σ = 20004223209954. Its totient is φ = 20004223209952.

The previous prime is 20004223209871. The next prime is 20004223210007. The reversal of 20004223209953 is 35990232240002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16562352277969 + 3441870931984 = 4069687^2 + 1855228^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004223209953 - 2¹⁰ = 20004223208929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20004223209953.

It is not a weakly prime, because it can be changed into another prime (20004223209653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002111604976 + 10002111604977.

It is an arithmetic number, because the mean of its divisors is an integer number (10002111604977).

Almost surely, 2^{20004223209953} is an apocalyptic number.

It is an amenable number.

20004223209953 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004223209953 is an equidigital number, since it uses as much as digits as its factorization.

20004223209953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 41.

Adding to 20004223209953 its reverse (35990232240002), we get a palindrome (55994455449955).

The spelling of 20004223209953 in words is "twenty trillion, four billion, two hundred twenty-three million, two hundred nine thousand, nine hundred fifty-three".