104640585689 has 2 divisors, whose sum is σ = 104640585690. Its totient is φ = 104640585688.

The previous prime is 104640585683. The next prime is 104640585697. The reversal of 104640585689 is 986585046401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95938867600 + 8701718089 = 309740^2 + 93283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104640585689 is a prime.

It is not a weakly prime, because it can be changed into another prime (104640585683) 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, 52320292844 + 52320292845.

It is an arithmetic number, because the mean of its divisors is an integer number (52320292845).

Almost surely, 2^104640585689 is an apocalyptic number.

It is an amenable number.

104640585689 is a deficient number, since it is larger than the sum of its proper divisors (1).

104640585689 is an equidigital number, since it uses as much as digits as its factorization.

104640585689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 104640585689 in words is "one hundred four billion, six hundred forty million, five hundred eighty-five thousand, six hundred eighty-nine".