20132020813 has 2 divisors, whose sum is σ = 20132020814. Its totient is φ = 20132020812.

The previous prime is 20132020793. The next prime is 20132020829. The reversal of 20132020813 is 31802023102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12258475524 + 7873545289 = 110718^2 + 88733^2 .

It is a cyclic number.

It is not a de Polignac number, because 20132020813 - 2³³ = 11542086221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20132020873) 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 as a sum of consecutive naturals, namely, 10066010406 + 10066010407.

It is an arithmetic number, because the mean of its divisors is an integer number (10066010407).

Almost surely, 2^20132020813 is an apocalyptic number.

It is an amenable number.

20132020813 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132020813 is an equidigital number, since it uses as much as digits as its factorization.

20132020813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20132020813 its reverse (31802023102), we get a palindrome (51934043915).

The spelling of 20132020813 in words is "twenty billion, one hundred thirty-two million, twenty thousand, eight hundred thirteen".