6481209168 has 300 divisors, whose sum is σ = 22637435040. Its totient is φ = 1753425792.

The previous prime is 6481209143. The next prime is 6481209173. The reversal of 6481209168 is 8619021846.

6481209168 is a `hidden beast` number, since 6 + 481 + 2 + 0 + 9 + 168 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3274003 + ... + 3275981.

Almost surely, 2^6481209168 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 6481209168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11318717520).

6481209168 is an abundant number, since it is smaller than the sum of its proper divisors (16156225872).

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

6481209168 is a wasteful number, since it uses less digits than its factorization.

6481209168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044 (or 2010 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 6481209168 is about 80505.9573447829. The cubic root of 6481209168 is about 1864.4554582774.

The spelling of 6481209168 in words is "six billion, four hundred eighty-one million, two hundred nine thousand, one hundred sixty-eight".