16281091008 has 336 divisors, whose sum is σ = 57657040896. Its totient is φ = 4277422080.

The previous prime is 16281090967. The next prime is 16281091027. The reversal of 16281091008 is 80019018261.

16281091008 is a `hidden beast` number, since 1 + 628 + 10 + 9 + 10 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20074923 + ... + 20075733.

It is an arithmetic number, because the mean of its divisors is an integer number (171598336).

Almost surely, 2^16281091008 is an apocalyptic number.

16281091008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16281091008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28828520448).

16281091008 is an abundant number, since it is smaller than the sum of its proper divisors (41375949888).

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

16281091008 is a wasteful number, since it uses less digits than its factorization.

16281091008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The spelling of 16281091008 in words is "sixteen billion, two hundred eighty-one million, ninety-one thousand, eight".