3804728666617 has 2 divisors, whose sum is σ = 3804728666618. Its totient is φ = 3804728666616.

The previous prime is 3804728666603. The next prime is 3804728666623. The reversal of 3804728666617 is 7166668274083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3801111726736 + 3616939881 = 1949644^2 + 60141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3804728666617 is a prime.

It is not a weakly prime, because it can be changed into another prime (3804728666657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1902364333308 + 1902364333309.

It is an arithmetic number, because the mean of its divisors is an integer number (1902364333309).

Almost surely, 2^{3804728666617} is an apocalyptic number.

It is an amenable number.

3804728666617 is a deficient number, since it is larger than the sum of its proper divisors (1).

3804728666617 is an equidigital number, since it uses as much as digits as its factorization.

3804728666617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97542144, while the sum is 64.

The spelling of 3804728666617 in words is "three trillion, eight hundred four billion, seven hundred twenty-eight million, six hundred sixty-six thousand, six hundred seventeen".