1040664289817 has 2 divisors, whose sum is σ = 1040664289818. Its totient is φ = 1040664289816.

The previous prime is 1040664289799. The next prime is 1040664289883. The reversal of 1040664289817 is 7189824660401.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 776027093776 + 264637196041 = 880924^2 + 514429^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040664289817 - 2²² = 1040660095513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1040664229817) 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, 520332144908 + 520332144909.

It is an arithmetic number, because the mean of its divisors is an integer number (520332144909).

Almost surely, 2^{1040664289817} is an apocalyptic number.

It is an amenable number.

1040664289817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040664289817 is an equidigital number, since it uses as much as digits as its factorization.

1040664289817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 1040664289817 in words is "one trillion, forty billion, six hundred sixty-four million, two hundred eighty-nine thousand, eight hundred seventeen".