1266712543307 has 2 divisors, whose sum is σ = 1266712543308. Its totient is φ = 1266712543306.

The previous prime is 1266712543297. The next prime is 1266712543319. The reversal of 1266712543307 is 7033452176621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1266712543307 - 2²⁰ = 1266711494731 is a prime.

It is not a weakly prime, because it can be changed into another prime (1266712543337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633356271653 + 633356271654.

It is an arithmetic number, because the mean of its divisors is an integer number (633356271654).

Almost surely, 2^{1266712543307} is an apocalyptic number.

1266712543307 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266712543307 is an equidigital number, since it uses as much as digits as its factorization.

1266712543307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 1266712543307 in words is "one trillion, two hundred sixty-six billion, seven hundred twelve million, five hundred forty-three thousand, three hundred seven".