5481775648 has 24 divisors (see below), whose sum is σ = 10802758428. Its totient is φ = 2738217984.

The previous prime is 5481775639. The next prime is 5481775693. The reversal of 5481775648 is 8465771845.

It can be written as a sum of positive squares in 2 ways, for example, as 5474224144 + 7551504 = 73988^2 + 2748^2 .

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 3 ways as a sum of consecutive naturals, for example, 49861 + ... + 115972.

Almost surely, 2^5481775648 is an apocalyptic number.

It is an amenable number.

5481775648 is a deficient number, since it is larger than the sum of its proper divisors (5320982780).

5481775648 is a wasteful number, since it uses less digits than its factorization.

5481775648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166876 (or 166868 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 55.

The square root of 5481775648 is about 74039.0143640500. The cubic root of 5481775648 is about 1763.2223645142. Note that the first 3 decimals are identical.

The spelling of 5481775648 in words is "five billion, four hundred eighty-one million, seven hundred seventy-five thousand, six hundred forty-eight".