20342422250509 has 2 divisors, whose sum is σ = 20342422250510. Its totient is φ = 20342422250508.

The previous prime is 20342422250497. The next prime is 20342422250543. The reversal of 20342422250509 is 90505222424302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18424723514409 + 1917698736100 = 4292403^2 + 1384810^2 .

It is a cyclic number.

It is not a de Polignac number, because 20342422250509 - 2¹¹ = 20342422248461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20342422250009) 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, 10171211125254 + 10171211125255.

It is an arithmetic number, because the mean of its divisors is an integer number (10171211125255).

Almost surely, 2^{20342422250509} is an apocalyptic number.

It is an amenable number.

20342422250509 is a deficient number, since it is larger than the sum of its proper divisors (1).

20342422250509 is an equidigital number, since it uses as much as digits as its factorization.

20342422250509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 20342422250509 in words is "twenty trillion, three hundred forty-two billion, four hundred twenty-two million, two hundred fifty thousand, five hundred nine".