21113546304 has 112 divisors (see below), whose sum is σ = 60592021056. Its totient is φ = 6462259200.

The previous prime is 21113546281. The next prime is 21113546323. The reversal of 21113546304 is 40364531112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54939 + ... + 212709.

It is an arithmetic number, because the mean of its divisors is an integer number (541000188).

Almost surely, 2^21113546304 is an apocalyptic number.

21113546304 is a gapful number since it is divisible by the number (24) 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 21113546304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30296010528).

21113546304 is an abundant number, since it is smaller than the sum of its proper divisors (39478474752).

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

21113546304 is a wasteful number, since it uses less digits than its factorization.

21113546304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157844 (or 157834 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 21113546304 in words is "twenty-one billion, one hundred thirteen million, five hundred forty-six thousand, three hundred four".