20024044423261 has 2 divisors, whose sum is σ = 20024044423262. Its totient is φ = 20024044423260.

The previous prime is 20024044423219. The next prime is 20024044423301. The reversal of 20024044423261 is 16232444042002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15527973708025 + 4496070715236 = 3940555^2 + 2120394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20024044423261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20024044423861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012022211630 + 10012022211631.

It is an arithmetic number, because the mean of its divisors is an integer number (10012022211631).

Almost surely, 2^{20024044423261} is an apocalyptic number.

It is an amenable number.

20024044423261 is a deficient number, since it is larger than the sum of its proper divisors (1).

20024044423261 is an equidigital number, since it uses as much as digits as its factorization.

20024044423261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 20024044423261 its reverse (16232444042002), we get a palindrome (36256488465263).

The spelling of 20024044423261 in words is "twenty trillion, twenty-four billion, forty-four million, four hundred twenty-three thousand, two hundred sixty-one".