9446775521 has 2 divisors, whose sum is σ = 9446775522. Its totient is φ = 9446775520.

The previous prime is 9446775473. The next prime is 9446775529. The reversal of 9446775521 is 1255776449.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6306742225 + 3140033296 = 79415^2 + 56036^2 .

It is an emirp because it is prime and its reverse (1255776449) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9446775521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9446775521.

It is not a weakly prime, because it can be changed into another prime (9446775529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4723387760 + 4723387761.

It is an arithmetic number, because the mean of its divisors is an integer number (4723387761).

Almost surely, 2^9446775521 is an apocalyptic number.

It is an amenable number.

9446775521 is a deficient number, since it is larger than the sum of its proper divisors (1).

9446775521 is an equidigital number, since it uses as much as digits as its factorization.

9446775521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 50.

The square root of 9446775521 is about 97194.5241307349. The cubic root of 9446775521 is about 2113.9491280657.

The spelling of 9446775521 in words is "nine billion, four hundred forty-six million, seven hundred seventy-five thousand, five hundred twenty-one".