12661652011 has 2 divisors, whose sum is σ = 12661652012. Its totient is φ = 12661652010.

The previous prime is 12661651999. The next prime is 12661652051. The reversal of 12661652011 is 11025616621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12661652011 - 2⁷ = 12661651883 is a prime.

It is not a weakly prime, because it can be changed into another prime (12661652051) 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, 6330826005 + 6330826006.

It is an arithmetic number, because the mean of its divisors is an integer number (6330826006).

Almost surely, 2^12661652011 is an apocalyptic number.

12661652011 is a deficient number, since it is larger than the sum of its proper divisors (1).

12661652011 is an equidigital number, since it uses as much as digits as its factorization.

12661652011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 12661652011 in words is "twelve billion, six hundred sixty-one million, six hundred fifty-two thousand, eleven".