10646000009 has 2 divisors, whose sum is σ = 10646000010. Its totient is φ = 10646000008.

The previous prime is 10645999993. The next prime is 10646000039. The reversal of 10646000009 is 90000064601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10119756409 + 526243600 = 100597^2 + 22940^2 .

It is a cyclic number.

It is not a de Polignac number, because 10646000009 - 2⁴ = 10645999993 is a prime.

It is a super-2 number, since 2×10646000009² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10646000039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5323000004 + 5323000005.

It is an arithmetic number, because the mean of its divisors is an integer number (5323000005).

Almost surely, 2^10646000009 is an apocalyptic number.

It is an amenable number.

10646000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10646000009 is an equidigital number, since it uses as much as digits as its factorization.

10646000009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 10646000009 in words is "ten billion, six hundred forty-six million, nine", and thus it is an aban number.