9809078668 has 48 divisors (see below), whose sum is σ = 18123406560. Its totient is φ = 4638233600.

The previous prime is 9809078633. The next prime is 9809078717. The reversal of 9809078668 is 8668709089.

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, 5415483 + ... + 5417293.

It is an arithmetic number, because the mean of its divisors is an integer number (377570970).

Almost surely, 2^9809078668 is an apocalyptic number.

It is an amenable number.

9809078668 is a deficient number, since it is larger than the sum of its proper divisors (8314327892).

9809078668 is a wasteful number, since it uses less digits than its factorization.

9809078668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778 (or 2776 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 61.

The square root of 9809078668 is about 99040.7929491682. The cubic root of 9809078668 is about 2140.6355776579.

The spelling of 9809078668 in words is "nine billion, eight hundred nine million, seventy-eight thousand, six hundred sixty-eight".