20416002266389 has 2 divisors, whose sum is σ = 20416002266390. Its totient is φ = 20416002266388.

The previous prime is 20416002266347. The next prime is 20416002266399. The reversal of 20416002266389 is 98366220061402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17701861340164 + 2714140926225 = 4207358^2 + 1647465^2 .

It is a cyclic number.

It is not a de Polignac number, because 20416002266389 - 2⁴¹ = 18216979010837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20416002266329) 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, 10208001133194 + 10208001133195.

It is an arithmetic number, because the mean of its divisors is an integer number (10208001133195).

Almost surely, 2^{20416002266389} is an apocalyptic number.

It is an amenable number.

20416002266389 is a deficient number, since it is larger than the sum of its proper divisors (1).

20416002266389 is an equidigital number, since it uses as much as digits as its factorization.

20416002266389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 20416002266389 in words is "twenty trillion, four hundred sixteen billion, two million, two hundred sixty-six thousand, three hundred eighty-nine".