9866773057 has 2 divisors, whose sum is σ = 9866773058. Its totient is φ = 9866773056.

The previous prime is 9866773051. The next prime is 9866773061. The reversal of 9866773057 is 7503776689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9675476496 + 191296561 = 98364^2 + 13831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9866773057 is a prime.

It is a super-2 number, since 2×9866773057² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9866772992 and 9866773010.

It is not a weakly prime, because it can be changed into another prime (9866773051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4933386528 + 4933386529.

It is an arithmetic number, because the mean of its divisors is an integer number (4933386529).

Almost surely, 2^9866773057 is an apocalyptic number.

It is an amenable number.

9866773057 is a deficient number, since it is larger than the sum of its proper divisors (1).

9866773057 is an equidigital number, since it uses as much as digits as its factorization.

9866773057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13335840, while the sum is 58.

The square root of 9866773057 is about 99331.6317041052. The cubic root of 9866773057 is about 2144.8242589612.

The spelling of 9866773057 in words is "nine billion, eight hundred sixty-six million, seven hundred seventy-three thousand, fifty-seven".