20213324320009 has 2 divisors, whose sum is σ = 20213324320010. Its totient is φ = 20213324320008.

The previous prime is 20213324319959. The next prime is 20213324320081. The reversal of 20213324320009 is 90002342331202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10207034574025 + 10006289745984 = 3194845^2 + 3163272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20213324320009 is a prime.

It is not a weakly prime, because it can be changed into another prime (20213324300009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106662160004 + 10106662160005.

It is an arithmetic number, because the mean of its divisors is an integer number (10106662160005).

Almost surely, 2^{20213324320009} is an apocalyptic number.

It is an amenable number.

20213324320009 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213324320009 is an equidigital number, since it uses as much as digits as its factorization.

20213324320009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 20213324320009 in words is "twenty trillion, two hundred thirteen billion, three hundred twenty-four million, three hundred twenty thousand, nine".