985732797006721 has 2 divisors, whose sum is σ = 985732797006722. Its totient is φ = 985732797006720.

The previous prime is 985732797006679. The next prime is 985732797006791. The reversal of 985732797006721 is 127600797237589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503003342085696 + 482729454921025 = 22427736^2 + 21971105^2 .

It is a cyclic number.

It is not a de Polignac number, because 985732797006721 - 2²⁹ = 985732260135809 is a prime.

It is not a weakly prime, because it can be changed into another prime (985732797006791) 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, 492866398503360 + 492866398503361.

It is an arithmetic number, because the mean of its divisors is an integer number (492866398503361).

Almost surely, 2^{985732797006721} is an apocalyptic number.

It is an amenable number.

985732797006721 is a deficient number, since it is larger than the sum of its proper divisors (1).

985732797006721 is an equidigital number, since it uses as much as digits as its factorization.

985732797006721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560105280, while the sum is 73.

The spelling of 985732797006721 in words is "nine hundred eighty-five trillion, seven hundred thirty-two billion, seven hundred ninety-seven million, six thousand, seven hundred twenty-one".