1000866793243 has 2 divisors, whose sum is σ = 1000866793244. Its totient is φ = 1000866793242.

The previous prime is 1000866793177. The next prime is 1000866793271. The reversal of 1000866793243 is 3423976680001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000866793243 is a prime.

It is a super-2 number, since 2×1000866793243² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1000866793273) 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, 500433396621 + 500433396622.

It is an arithmetic number, because the mean of its divisors is an integer number (500433396622).

Almost surely, 2^{1000866793243} is an apocalyptic number.

1000866793243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000866793243 is an equidigital number, since it uses as much as digits as its factorization.

1000866793243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 1000866793243 in words is "one trillion, eight hundred sixty-six million, seven hundred ninety-three thousand, two hundred forty-three".