To find out the number of digits in the Hindu-Arabic form of the number 26 × 1011, we need to calculate the product of the two numbers first.
26 \times 1011 = 26,286
Next, we need to count the number of digits in the resulting product.
The resulting product, 26,286, has 5 digits.
Therefore, the Hindu-Arabic form of the numeral 26 × 1011 has 5 digits.
Answer: 5