2648778912 has 108 divisors (see below), whose sum is σ = 8156606094. Its totient is φ = 814993920.

The previous prime is 2648778907. The next prime is 2648778941. The reversal of 2648778912 is 2198778462.

It is a happy number.

2648778912 is a `hidden beast` number, since 2 + 6 + 487 + 78 + 91 + 2 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1904798736 + 743980176 = 43644^2 + 27276^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21462 + ... + 75882.

Almost surely, 2^2648778912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2648778912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4078303047).

2648778912 is an abundant number, since it is smaller than the sum of its proper divisors (5507827182).

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

2648778912 is a wasteful number, since it uses less digits than its factorization.

2648778912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54463 (or 54439 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 2648778912 is about 51466.2890832436. The cubic root of 2648778912 is about 1383.6149206548.

The spelling of 2648778912 in words is "two billion, six hundred forty-eight million, seven hundred seventy-eight thousand, nine hundred twelve".