20445341117 has 2 divisors, whose sum is σ = 20445341118. Its totient is φ = 20445341116.

The previous prime is 20445341099. The next prime is 20445341129. The reversal of 20445341117 is 71114354402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19850273881 + 595067236 = 140891^2 + 24394^2 .

It is a cyclic number.

It is not a de Polignac number, because 20445341117 - 2³⁰ = 19371599293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20445341177) 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, 10222670558 + 10222670559.

It is an arithmetic number, because the mean of its divisors is an integer number (10222670559).

Almost surely, 2^20445341117 is an apocalyptic number.

It is an amenable number.

20445341117 is a deficient number, since it is larger than the sum of its proper divisors (1).

20445341117 is an equidigital number, since it uses as much as digits as its factorization.

20445341117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

Adding to 20445341117 its reverse (71114354402), we get a palindrome (91559695519).

The spelling of 20445341117 in words is "twenty billion, four hundred forty-five million, three hundred forty-one thousand, one hundred seventeen".