1266252790247 has 2 divisors, whose sum is σ = 1266252790248. Its totient is φ = 1266252790246.

The previous prime is 1266252790219. The next prime is 1266252790303. The reversal of 1266252790247 is 7420972526621.

It is a weak prime.

It is an emirp because it is prime and its reverse (7420972526621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1266252790247 - 2⁶ = 1266252790183 is a prime.

It is a super-2 number, since 2×1266252790247² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266252790207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633126395123 + 633126395124.

It is an arithmetic number, because the mean of its divisors is an integer number (633126395124).

Almost surely, 2^{1266252790247} is an apocalyptic number.

1266252790247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266252790247 is an equidigital number, since it uses as much as digits as its factorization.

1266252790247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 1266252790247 in words is "one trillion, two hundred sixty-six billion, two hundred fifty-two million, seven hundred ninety thousand, two hundred forty-seven".