9885078865 has 16 divisors (see below), whose sum is σ = 12195539136. Its totient is φ = 7687512000.

The previous prime is 9885078829. The next prime is 9885078913. The reversal of 9885078865 is 5688705889.

It is not a de Polignac number, because 9885078865 - 2¹³ = 9885070673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9885078797 and 9885078806.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63586 + ... + 154315.

It is an arithmetic number, because the mean of its divisors is an integer number (762221196).

Almost surely, 2^9885078865 is an apocalyptic number.

It is an amenable number.

9885078865 is a deficient number, since it is larger than the sum of its proper divisors (2310460271).

9885078865 is a wasteful number, since it uses less digits than its factorization.

9885078865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218160.

The product of its (nonzero) digits is 38707200, while the sum is 64.

The square root of 9885078865 is about 99423.7339119790. The cubic root of 9885078865 is about 2146.1498691508.

The spelling of 9885078865 in words is "nine billion, eight hundred eighty-five million, seventy-eight thousand, eight hundred sixty-five".