1266771683167 has 2 divisors, whose sum is σ = 1266771683168. Its totient is φ = 1266771683166.

The previous prime is 1266771683159. The next prime is 1266771683201. The reversal of 1266771683167 is 7613861776621.

It is a weak prime.

It is an emirp because it is prime and its reverse (7613861776621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1266771683167 - 2³ = 1266771683159 is a prime.

It is a super-2 number, since 2×1266771683167² (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 (1266771683117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633385841583 + 633385841584.

It is an arithmetic number, because the mean of its divisors is an integer number (633385841584).

Almost surely, 2^{1266771683167} is an apocalyptic number.

1266771683167 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266771683167 is an equidigital number, since it uses as much as digits as its factorization.

1266771683167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21337344, while the sum is 61.

The spelling of 1266771683167 in words is "one trillion, two hundred sixty-six billion, seven hundred seventy-one million, six hundred eighty-three thousand, one hundred sixty-seven".