20034340853 has 2 divisors, whose sum is σ = 20034340854. Its totient is φ = 20034340852.

The previous prime is 20034340771. The next prime is 20034340903. The reversal of 20034340853 is 35804343002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18321788164 + 1712552689 = 135358^2 + 41383^2 .

It is a cyclic number.

It is not a de Polignac number, because 20034340853 - 2¹⁴ = 20034324469 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20034340153) 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, 10017170426 + 10017170427.

It is an arithmetic number, because the mean of its divisors is an integer number (10017170427).

Almost surely, 2^20034340853 is an apocalyptic number.

It is an amenable number.

20034340853 is a deficient number, since it is larger than the sum of its proper divisors (1).

20034340853 is an equidigital number, since it uses as much as digits as its factorization.

20034340853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 20034340853 its reverse (35804343002), we get a palindrome (55838683855).

The spelling of 20034340853 in words is "twenty billion, thirty-four million, three hundred forty thousand, eight hundred fifty-three".