1000866726887 has 2 divisors, whose sum is σ = 1000866726888. Its totient is φ = 1000866726886.

The previous prime is 1000866726883. The next prime is 1000866726931. The reversal of 1000866726887 is 7886276680001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000866726887 - 2² = 1000866726883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000866726883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500433363443 + 500433363444.

It is an arithmetic number, because the mean of its divisors is an integer number (500433363444).

Almost surely, 2^{1000866726887} is an apocalyptic number.

1000866726887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000866726887 is an equidigital number, since it uses as much as digits as its factorization.

1000866726887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10838016, while the sum is 59.

The spelling of 1000866726887 in words is "one trillion, eight hundred sixty-six million, seven hundred twenty-six thousand, eight hundred eighty-seven".