20042422400797 has 2 divisors, whose sum is σ = 20042422400798. Its totient is φ = 20042422400796.

The previous prime is 20042422400761. The next prime is 20042422400969. The reversal of 20042422400797 is 79700422424002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10174147813636 + 9868274587161 = 3189694^2 + 3141381^2 .

It is a cyclic number.

It is not a de Polignac number, because 20042422400797 - 2⁷ = 20042422400669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20042432400797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021211200398 + 10021211200399.

It is an arithmetic number, because the mean of its divisors is an integer number (10021211200399).

Almost surely, 2^{20042422400797} is an apocalyptic number.

It is an amenable number.

20042422400797 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042422400797 is an equidigital number, since it uses as much as digits as its factorization.

20042422400797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 43.

Adding to 20042422400797 its reverse (79700422424002), we get a palindrome (99742844824799).

The spelling of 20042422400797 in words is "twenty trillion, forty-two billion, four hundred twenty-two million, four hundred thousand, seven hundred ninety-seven".