20424010420181 has 2 divisors, whose sum is σ = 20424010420182. Its totient is φ = 20424010420180.

The previous prime is 20424010420153. The next prime is 20424010420277. The reversal of 20424010420181 is 18102401042402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15189025236100 + 5234985184081 = 3897310^2 + 2288009^2 .

It is a cyclic number.

It is not a de Polignac number, because 20424010420181 - 2⁶ = 20424010420117 is a prime.

It is a super-2 number, since 2×20424010420181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20424010420981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212005210090 + 10212005210091.

It is an arithmetic number, because the mean of its divisors is an integer number (10212005210091).

Almost surely, 2^{20424010420181} is an apocalyptic number.

It is an amenable number.

20424010420181 is a deficient number, since it is larger than the sum of its proper divisors (1).

20424010420181 is an equidigital number, since it uses as much as digits as its factorization.

20424010420181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 29.

Adding to 20424010420181 its reverse (18102401042402), we get a palindrome (38526411462583).

The spelling of 20424010420181 in words is "twenty trillion, four hundred twenty-four billion, ten million, four hundred twenty thousand, one hundred eighty-one".