9985775899 has 16 divisors (see below), whose sum is σ = 11259440640. Its totient is φ = 8777745760.

The previous prime is 9985775897. The next prime is 9985775903.

9985775899 is nontrivially palindromic in base 10.

9985775899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9985775899 - 2¹ = 9985775897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9985775897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73444 + ... + 159265.

It is an arithmetic number, because the mean of its divisors is an integer number (703715040).

Almost surely, 2^9985775899 is an apocalyptic number.

9985775899 is a deficient number, since it is larger than the sum of its proper divisors (1273664741).

9985775899 is a wasteful number, since it uses less digits than its factorization.

9985775899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232850.

The product of its digits is 514382400, while the sum is 76.

The square root of 9985775899 is about 99928.8541863660. The cubic root of 9985775899 is about 2153.4127087655.

The spelling of 9985775899 in words is "nine billion, nine hundred eighty-five million, seven hundred seventy-five thousand, eight hundred ninety-nine".