8778047648 has 24 divisors (see below), whose sum is σ = 18298357812. Its totient is φ = 4130845696.

The previous prime is 8778047599. The next prime is 8778047657. The reversal of 8778047648 is 8467408778.

It can be written as a sum of positive squares in 2 ways, for example, as 8547372304 + 230675344 = 92452^2 + 15188^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8067515 + ... + 8068602.

Almost surely, 2^8778047648 is an apocalyptic number.

It is an amenable number.

8778047648 is an abundant number, since it is smaller than the sum of its proper divisors (9520310164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8778047648 is a wasteful number, since it uses less digits than its factorization.

8778047648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16136144 (or 16136136 counting only the distinct ones).

The product of its (nonzero) digits is 16859136, while the sum is 59.

The square root of 8778047648 is about 93691.2357053743. The cubic root of 8778047648 is about 2062.8420607716.

The spelling of 8778047648 in words is "eight billion, seven hundred seventy-eight million, forty-seven thousand, six hundred forty-eight".