383845616617 has 2 divisors, whose sum is σ = 383845616618. Its totient is φ = 383845616616.

The previous prime is 383845616603. The next prime is 383845616669. The reversal of 383845616617 is 716616548383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354514258921 + 29331357696 = 595411^2 + 171264^2 .

It is an emirp because it is prime and its reverse (716616548383) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-383845616617 is a prime.

It is not a weakly prime, because it can be changed into another prime (383845619617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191922808308 + 191922808309.

It is an arithmetic number, because the mean of its divisors is an integer number (191922808309).

Almost surely, 2^383845616617 is an apocalyptic number.

It is an amenable number.

383845616617 is a deficient number, since it is larger than the sum of its proper divisors (1).

383845616617 is an equidigital number, since it uses as much as digits as its factorization.

383845616617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 58.

The spelling of 383845616617 in words is "three hundred eighty-three billion, eight hundred forty-five million, six hundred sixteen thousand, six hundred seventeen".