6343981128 has 64 divisors (see below), whose sum is σ = 17749032000. Its totient is φ = 2099437056.

The previous prime is 6343981097. The next prime is 6343981129. The reversal of 6343981128 is 8211893436.

6343981128 is a `hidden beast` number, since 634 + 3 + 9 + 8 + 1 + 1 + 2 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (6343981129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75625 + ... + 135672.

It is an arithmetic number, because the mean of its divisors is an integer number (277328625).

Almost surely, 2^6343981128 is an apocalyptic number.

It is an amenable number.

6343981128 is an abundant number, since it is smaller than the sum of its proper divisors (11405050872).

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

6343981128 is a wasteful number, since it uses less digits than its factorization.

6343981128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211451 (or 211441 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 6343981128 is about 79649.1125374288. The cubic root of 6343981128 is about 1851.2026393052.

The spelling of 6343981128 in words is "six billion, three hundred forty-three million, nine hundred eighty-one thousand, one hundred twenty-eight".