12006440653 has 2 divisors, whose sum is σ = 12006440654. Its totient is φ = 12006440652.

The previous prime is 12006440569. The next prime is 12006440671. The reversal of 12006440653 is 35604460021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11898010084 + 108430569 = 109078^2 + 10413^2 .

It is a cyclic number.

It is not a de Polignac number, because 12006440653 - 2⁹ = 12006440141 is a prime.

It is a super-2 number, since 2×12006440653² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12006440053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6003220326 + 6003220327.

It is an arithmetic number, because the mean of its divisors is an integer number (6003220327).

Almost surely, 2^12006440653 is an apocalyptic number.

It is an amenable number.

12006440653 is a deficient number, since it is larger than the sum of its proper divisors (1).

12006440653 is an equidigital number, since it uses as much as digits as its factorization.

12006440653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 12006440653 in words is "twelve billion, six million, four hundred forty thousand, six hundred fifty-three".