6481884128 has 48 divisors (see below), whose sum is σ = 12835383120. Its totient is φ = 3222168576.

The previous prime is 6481884107. The next prime is 6481884131. The reversal of 6481884128 is 8214881846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5771375 + ... + 5772497.

It is an arithmetic number, because the mean of its divisors is an integer number (267403815).

Almost surely, 2^6481884128 is an apocalyptic number.

It is an amenable number.

6481884128 is a deficient number, since it is larger than the sum of its proper divisors (6353498992).

6481884128 is a wasteful number, since it uses less digits than its factorization.

6481884128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019 (or 2011 counting only the distinct ones).

The product of its digits is 786432, while the sum is 50.

The square root of 6481884128 is about 80510.1492235606. The cubic root of 6481884128 is about 1864.5201781540.

The spelling of 6481884128 in words is "six billion, four hundred eighty-one million, eight hundred eighty-four thousand, one hundred twenty-eight".