9985115867 has 2 divisors, whose sum is σ = 9985115868. Its totient is φ = 9985115866.

The previous prime is 9985115863. The next prime is 9985115893. The reversal of 9985115867 is 7685115899.

9985115867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9985115867 - 2² = 9985115863 is a prime.

It is not a weakly prime, because it can be changed into another prime (9985115863) 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 as a sum of consecutive naturals, namely, 4992557933 + 4992557934.

It is an arithmetic number, because the mean of its divisors is an integer number (4992557934).

Almost surely, 2^9985115867 is an apocalyptic number.

9985115867 is a deficient number, since it is larger than the sum of its proper divisors (1).

9985115867 is an equidigital number, since it uses as much as digits as its factorization.

9985115867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 59.

The square root of 9985115867 is about 99925.5516221952. The cubic root of 9985115867 is about 2153.3652628575.

The spelling of 9985115867 in words is "nine billion, nine hundred eighty-five million, one hundred fifteen thousand, eight hundred sixty-seven".