1271566006247 has 2 divisors, whose sum is σ = 1271566006248. Its totient is φ = 1271566006246.

The previous prime is 1271566006187. The next prime is 1271566006261. The reversal of 1271566006247 is 7426006651721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1271566006247 - 2²² = 1271561811943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1271566006147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635783003123 + 635783003124.

It is an arithmetic number, because the mean of its divisors is an integer number (635783003124).

Almost surely, 2^{1271566006247} is an apocalyptic number.

1271566006247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271566006247 is an equidigital number, since it uses as much as digits as its factorization.

1271566006247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 1271566006247 in words is "one trillion, two hundred seventy-one billion, five hundred sixty-six million, six thousand, two hundred forty-seven".