20014454366509 has 2 divisors, whose sum is σ = 20014454366510. Its totient is φ = 20014454366508.

The previous prime is 20014454366483. The next prime is 20014454366537. The reversal of 20014454366509 is 90566345441002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16718040112900 + 3296414253609 = 4088770^2 + 1815603^2 .

It is a cyclic number.

It is not a de Polignac number, because 20014454366509 - 2⁷ = 20014454366381 is a prime.

It is a super-3 number, since 3×20014454366509³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20014454366209) 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, 10007227183254 + 10007227183255.

It is an arithmetic number, because the mean of its divisors is an integer number (10007227183255).

Almost surely, 2^{20014454366509} is an apocalyptic number.

It is an amenable number.

20014454366509 is a deficient number, since it is larger than the sum of its proper divisors (1).

20014454366509 is an equidigital number, since it uses as much as digits as its factorization.

20014454366509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 20014454366509 in words is "twenty trillion, fourteen billion, four hundred fifty-four million, three hundred sixty-six thousand, five hundred nine".