1000866776887 has 2 divisors, whose sum is σ = 1000866776888. Its totient is φ = 1000866776886.

The previous prime is 1000866776831. The next prime is 1000866776893. The reversal of 1000866776887 is 7886776680001.

It is a strong prime.

It is an emirp because it is prime and its reverse (7886776680001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000866776887 - 2³¹ = 998719293239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000866726887) 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, 500433388443 + 500433388444.

It is an arithmetic number, because the mean of its divisors is an integer number (500433388444).

Almost surely, 2^{1000866776887} is an apocalyptic number.

1000866776887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000866776887 is an equidigital number, since it uses as much as digits as its factorization.

1000866776887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37933056, while the sum is 64.

The spelling of 1000866776887 in words is "one trillion, eight hundred sixty-six million, seven hundred seventy-six thousand, eight hundred eighty-seven".