12666010619 has 2 divisors, whose sum is σ = 12666010620. Its totient is φ = 12666010618.

The previous prime is 12666010601. The next prime is 12666010661. The reversal of 12666010619 is 91601066621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12666010619 - 2⁸ = 12666010363 is a prime.

It is a super-2 number, since 2×12666010619² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12666016619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6333005309 + 6333005310.

It is an arithmetic number, because the mean of its divisors is an integer number (6333005310).

Almost surely, 2^12666010619 is an apocalyptic number.

12666010619 is a deficient number, since it is larger than the sum of its proper divisors (1).

12666010619 is an equidigital number, since it uses as much as digits as its factorization.

12666010619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 12666010619 in words is "twelve billion, six hundred sixty-six million, ten thousand, six hundred nineteen".