20533323113 has 2 divisors, whose sum is σ = 20533323114. Its totient is φ = 20533323112.

The previous prime is 20533323089. The next prime is 20533323121. The reversal of 20533323113 is 31132333502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17174888809 + 3358434304 = 131053^2 + 57952^2 .

It is a cyclic number.

It is not a de Polignac number, because 20533323113 - 2¹⁸ = 20533060969 is a prime.

It is not a weakly prime, because it can be changed into another prime (20533322113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10266661556 + 10266661557.

It is an arithmetic number, because the mean of its divisors is an integer number (10266661557).

Almost surely, 2^20533323113 is an apocalyptic number.

It is an amenable number.

20533323113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20533323113 is an equidigital number, since it uses as much as digits as its factorization.

20533323113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 26.

Adding to 20533323113 its reverse (31132333502), we get a palindrome (51665656615).

The spelling of 20533323113 in words is "twenty billion, five hundred thirty-three million, three hundred twenty-three thousand, one hundred thirteen".