6381281088 has 504 divisors, whose sum is σ = 23516368512. Its totient is φ = 1672897536.

The previous prime is 6381281059. The next prime is 6381281089. The reversal of 6381281088 is 8801821836.

6381281088 is a `hidden beast` number, since 638 + 1 + 2 + 8 + 1 + 0 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6381281089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 38211181 + ... + 38211347.

Almost surely, 2^6381281088 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 6381281088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11758184256).

6381281088 is an abundant number, since it is smaller than the sum of its proper divisors (17135087424).

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

6381281088 is an equidigital number, since it uses as much as digits as its factorization.

6381281088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 6381281088 is about 79882.9211283613. The cubic root of 6381281088 is about 1854.8236513772.

The spelling of 6381281088 in words is "six billion, three hundred eighty-one million, two hundred eighty-one thousand, eighty-eight".