6444848778 has 32 divisors (see below), whose sum is σ = 13079480832. Its totient is φ = 2116690800.

The previous prime is 6444848749. The next prime is 6444848783. The reversal of 6444848778 is 8778484446.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 852925 + ... + 860447.

It is an arithmetic number, because the mean of its divisors is an integer number (408733776).

Almost surely, 2^6444848778 is an apocalyptic number.

6444848778 is an abundant number, since it is smaller than the sum of its proper divisors (6634632054).

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

6444848778 is a wasteful number, since it uses less digits than its factorization.

6444848778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9610.

The product of its digits is 38535168, while the sum is 60.

The square root of 6444848778 is about 80279.8155080092. The cubic root of 6444848778 is about 1860.9623087271.

The spelling of 6444848778 in words is "six billion, four hundred forty-four million, eight hundred forty-eight thousand, seven hundred seventy-eight".