9777806875 has 20 divisors (see below), whose sum is σ = 12612512704. Its totient is φ = 7569900000.

The previous prime is 9777806873. The next prime is 9777806881. The reversal of 9777806875 is 5786087779.

It is not a de Polignac number, because 9777806875 - 2¹ = 9777806873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9777806873) 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 in 19 ways as a sum of consecutive naturals, for example, 232956 + ... + 271705.

Almost surely, 2^9777806875 is an apocalyptic number.

9777806875 is a deficient number, since it is larger than the sum of its proper divisors (2834705829).

9777806875 is an equidigital number, since it uses as much as digits as its factorization.

9777806875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504712 (or 504697 counting only the distinct ones).

The product of its (nonzero) digits is 41489280, while the sum is 64.

The square root of 9777806875 is about 98882.7936245735. The cubic root of 9777806875 is about 2138.3583411392.

The spelling of 9777806875 in words is "nine billion, seven hundred seventy-seven million, eight hundred six thousand, eight hundred seventy-five".