9866773073 has 2 divisors, whose sum is σ = 9866773074. Its totient is φ = 9866773072.

The previous prime is 9866773061. The next prime is 9866773079. The reversal of 9866773073 is 3703776689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6669662224 + 3197110849 = 81668^2 + 56543^2 .

It is a cyclic number.

It is not a de Polignac number, because 9866773073 - 2⁴ = 9866773057 is a prime.

It is not a weakly prime, because it can be changed into another prime (9866773079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4933386536 + 4933386537.

It is an arithmetic number, because the mean of its divisors is an integer number (4933386537).

Almost surely, 2^9866773073 is an apocalyptic number.

It is an amenable number.

9866773073 is a deficient number, since it is larger than the sum of its proper divisors (1).

9866773073 is an equidigital number, since it uses as much as digits as its factorization.

9866773073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8001504, while the sum is 56.

The square root of 9866773073 is about 99331.6317846435. The cubic root of 9866773073 is about 2144.8242601206.

The spelling of 9866773073 in words is "nine billion, eight hundred sixty-six million, seven hundred seventy-three thousand, seventy-three".