20424010419689 has 2 divisors, whose sum is σ = 20424010419690. Its totient is φ = 20424010419688.

The previous prime is 20424010419613. The next prime is 20424010419739. The reversal of 20424010419689 is 98691401042402.

It is a happy number.

It is an a-pointer prime, because the next prime (20424010419739) can be obtained adding 20424010419689 to its sum of digits (50).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20190571665664 + 233438754025 = 4493392^2 + 483155^2 .

It is a cyclic number.

It is not a de Polignac number, because 20424010419689 - 2²⁰ = 20424009371113 is a prime.

It is not a weakly prime, because it can be changed into another prime (20424010419289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212005209844 + 10212005209845.

It is an arithmetic number, because the mean of its divisors is an integer number (10212005209845).

Almost surely, 2^{20424010419689} is an apocalyptic number.

It is an amenable number.

20424010419689 is a deficient number, since it is larger than the sum of its proper divisors (1).

20424010419689 is an equidigital number, since it uses as much as digits as its factorization.

20424010419689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 20424010419689 in words is "twenty trillion, four hundred twenty-four billion, ten million, four hundred nineteen thousand, six hundred eighty-nine".