20533034413 has 2 divisors, whose sum is σ = 20533034414. Its totient is φ = 20533034412.

The previous prime is 20533034383. The next prime is 20533034441. The reversal of 20533034413 is 31443033502.

It is an a-pointer prime, because the next prime (20533034441) can be obtained adding 20533034413 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19840976164 + 692058249 = 140858^2 + 26307^2 .

It is a cyclic number.

It is not a de Polignac number, because 20533034413 - 2¹³ = 20533026221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20533034113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10266517206 + 10266517207.

It is an arithmetic number, because the mean of its divisors is an integer number (10266517207).

Almost surely, 2^20533034413 is an apocalyptic number.

It is an amenable number.

20533034413 is a deficient number, since it is larger than the sum of its proper divisors (1).

20533034413 is an equidigital number, since it uses as much as digits as its factorization.

20533034413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 20533034413 its reverse (31443033502), we get a palindrome (51976067915).

The spelling of 20533034413 in words is "twenty billion, five hundred thirty-three million, thirty-four thousand, four hundred thirteen".