20105040533 has 2 divisors, whose sum is σ = 20105040534. Its totient is φ = 20105040532.

The previous prime is 20105040521. The next prime is 20105040559. The reversal of 20105040533 is 33504050102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18389258449 + 1715782084 = 135607^2 + 41422^2 .

It is a cyclic number.

It is not a de Polignac number, because 20105040533 - 2⁶ = 20105040469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20105040499 and 20105040508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20105040233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052520266 + 10052520267.

It is an arithmetic number, because the mean of its divisors is an integer number (10052520267).

Almost surely, 2^20105040533 is an apocalyptic number.

It is an amenable number.

20105040533 is a deficient number, since it is larger than the sum of its proper divisors (1).

20105040533 is an equidigital number, since it uses as much as digits as its factorization.

20105040533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 20105040533 its reverse (33504050102), we get a palindrome (53609090635).

The spelling of 20105040533 in words is "twenty billion, one hundred five million, forty thousand, five hundred thirty-three".