20313145220009 has 2 divisors, whose sum is σ = 20313145220010. Its totient is φ = 20313145220008.

The previous prime is 20313145219987. The next prime is 20313145220141. The reversal of 20313145220009 is 90002254131302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19207156464409 + 1105988755600 = 4382597^2 + 1051660^2 .

It is a cyclic number.

It is not a de Polignac number, because 20313145220009 - 2⁸ = 20313145219753 is a prime.

It is not a weakly prime, because it can be changed into another prime (20313145223009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156572610004 + 10156572610005.

It is an arithmetic number, because the mean of its divisors is an integer number (10156572610005).

Almost surely, 2^{20313145220009} is an apocalyptic number.

It is an amenable number.

20313145220009 is a deficient number, since it is larger than the sum of its proper divisors (1).

20313145220009 is an equidigital number, since it uses as much as digits as its factorization.

20313145220009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 20313145220009 in words is "twenty trillion, three hundred thirteen billion, one hundred forty-five million, two hundred twenty thousand, nine".