12043656065 has 32 divisors (see below), whose sum is σ = 17985888000. Its totient is φ = 7554048768.

The previous prime is 12043656043. The next prime is 12043656101. The reversal of 12043656065 is 56065634021.

It is a happy number.

It is not a de Polignac number, because 12043656065 - 2²⁸ = 11775220609 is a prime.

It is a super-2 number, since 2×12043656065² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 292970 + ... + 331539.

It is an arithmetic number, because the mean of its divisors is an integer number (562059000).

Almost surely, 2^12043656065 is an apocalyptic number.

It is an amenable number.

12043656065 is a deficient number, since it is larger than the sum of its proper divisors (5942231935).

12043656065 is a wasteful number, since it uses less digits than its factorization.

12043656065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624569.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 12043656065 in words is "twelve billion, forty-three million, six hundred fifty-six thousand, sixty-five".