20042422400761 has 2 divisors, whose sum is σ = 20042422400762. Its totient is φ = 20042422400760.

The previous prime is 20042422400681. The next prime is 20042422400797. The reversal of 20042422400761 is 16700422424002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14334886388736 + 5707536012025 = 3786144^2 + 2389045^2 .

It is a cyclic number.

It is not a de Polignac number, because 20042422400761 - 2¹⁵ = 20042422367993 is a prime.

It is not a weakly prime, because it can be changed into another prime (20042422100761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021211200380 + 10021211200381.

It is an arithmetic number, because the mean of its divisors is an integer number (10021211200381).

Almost surely, 2^{20042422400761} is an apocalyptic number.

It is an amenable number.

20042422400761 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042422400761 is an equidigital number, since it uses as much as digits as its factorization.

20042422400761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 34.

Adding to 20042422400761 its reverse (16700422424002), we get a palindrome (36742844824763).

The spelling of 20042422400761 in words is "twenty trillion, forty-two billion, four hundred twenty-two million, four hundred thousand, seven hundred sixty-one".