3668220217847 has 2 divisors, whose sum is σ = 3668220217848. Its totient is φ = 3668220217846.

The previous prime is 3668220217817. The next prime is 3668220217993. The reversal of 3668220217847 is 7487120228663.

3668220217847 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3668220217847 - 2²⁰ = 3668219169271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3668220217792 and 3668220217801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3668220217817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1834110108923 + 1834110108924.

It is an arithmetic number, because the mean of its divisors is an integer number (1834110108924).

Almost surely, 2^{3668220217847} is an apocalyptic number.

3668220217847 is a deficient number, since it is larger than the sum of its proper divisors (1).

3668220217847 is an equidigital number, since it uses as much as digits as its factorization.

3668220217847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10838016, while the sum is 56.

The spelling of 3668220217847 in words is "three trillion, six hundred sixty-eight billion, two hundred twenty million, two hundred seventeen thousand, eight hundred forty-seven".