21341935008 has 144 divisors (see below), whose sum is σ = 61919544960. Its totient is φ = 6970779648.

The previous prime is 21341934989. The next prime is 21341935049. The reversal of 21341935008 is 80053914312.

21341935008 is a `hidden beast` number, since 2 + 134 + 19 + 3 + 500 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5724441 + ... + 5728167.

It is an arithmetic number, because the mean of its divisors is an integer number (429996840).

Almost surely, 2^21341935008 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 21341935008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30959772480).

21341935008 is an abundant number, since it is smaller than the sum of its proper divisors (40577609952).

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

21341935008 is a wasteful number, since it uses less digits than its factorization.

21341935008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139 (or 4128 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 21341935008 in words is "twenty-one billion, three hundred forty-one million, nine hundred thirty-five thousand, eight".