5636122042081 has 2 divisors, whose sum is σ = 5636122042082. Its totient is φ = 5636122042080.

The previous prime is 5636122042049. The next prime is 5636122042091. The reversal of 5636122042081 is 1802402216365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5603829952081 + 32292090000 = 2367241^2 + 179700^2 .

It is a cyclic number.

It is not a de Polignac number, because 5636122042081 - 2⁵ = 5636122042049 is a prime.

It is a super-2 number, since 2×5636122042081² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5636122042021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2818061021040 + 2818061021041.

It is an arithmetic number, because the mean of its divisors is an integer number (2818061021041).

Almost surely, 2^{5636122042081} is an apocalyptic number.

It is an amenable number.

5636122042081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5636122042081 is an equidigital number, since it uses as much as digits as its factorization.

5636122042081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 5636122042081 in words is "five trillion, six hundred thirty-six billion, one hundred twenty-two million, forty-two thousand, eighty-one".