12650655609 has 24 divisors (see below), whose sum is σ = 18383219712. Its totient is φ = 8383049280.

The previous prime is 12650655593. The next prime is 12650655671. The reversal of 12650655609 is 90655605621.

12650655609 is a `hidden beast` number, since 1 + 26 + 5 + 0 + 65 + 560 + 9 = 666.

It is not a de Polignac number, because 12650655609 - 2⁴ = 12650655593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12650650609) 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 in 23 ways as a sum of consecutive naturals, for example, 3286524 + ... + 3290370.

It is an arithmetic number, because the mean of its divisors is an integer number (765967488).

Almost surely, 2^12650655609 is an apocalyptic number.

It is an amenable number.

12650655609 is a deficient number, since it is larger than the sum of its proper divisors (5732564103).

12650655609 is a wasteful number, since it uses less digits than its factorization.

12650655609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5957 (or 5954 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 12650655609 in words is "twelve billion, six hundred fifty million, six hundred fifty-five thousand, six hundred nine".