4425363565661 has 2 divisors, whose sum is σ = 4425363565662. Its totient is φ = 4425363565660.

The previous prime is 4425363565633. The next prime is 4425363565687. The reversal of 4425363565661 is 1665653635244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3483262322500 + 942101243161 = 1866350^2 + 970619^2 .

It is a cyclic number.

It is not a de Polignac number, because 4425363565661 - 2²⁶ = 4425296456797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4425363565597 and 4425363565606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4425368565661) 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, 2212681782830 + 2212681782831.

It is an arithmetic number, because the mean of its divisors is an integer number (2212681782831).

Almost surely, 2^{4425363565661} is an apocalyptic number.

It is an amenable number.

4425363565661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4425363565661 is an equidigital number, since it uses as much as digits as its factorization.

4425363565661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656000, while the sum is 56.

The spelling of 4425363565661 in words is "four trillion, four hundred twenty-five billion, three hundred sixty-three million, five hundred sixty-five thousand, six hundred sixty-one".