12667766651 has 2 divisors, whose sum is σ = 12667766652. Its totient is φ = 12667766650.

The previous prime is 12667766633. The next prime is 12667766663. The reversal of 12667766651 is 15666776621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12667766651 - 2¹⁴ = 12667750267 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12667766593 and 12667766602.

It is not a weakly prime, because it can be changed into another prime (12667766611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6333883325 + 6333883326.

It is an arithmetic number, because the mean of its divisors is an integer number (6333883326).

Almost surely, 2^12667766651 is an apocalyptic number.

12667766651 is a deficient number, since it is larger than the sum of its proper divisors (1).

12667766651 is an equidigital number, since it uses as much as digits as its factorization.

12667766651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 53.

The spelling of 12667766651 in words is "twelve billion, six hundred sixty-seven million, seven hundred sixty-six thousand, six hundred fifty-one".