21333104460 has 360 divisors, whose sum is σ = 70488478368. Its totient is φ = 5399654400.

The previous prime is 21333104447. The next prime is 21333104581. The reversal of 21333104460 is 6440133312.

21333104460 is a `hidden beast` number, since 213 + 3 + 3 + 1 + 0 + 446 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 110534124 + ... + 110534316.

Almost surely, 2^21333104460 is an apocalyptic number.

21333104460 is a gapful number since it is divisible by the number (20) 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 21333104460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35244239184).

21333104460 is an abundant number, since it is smaller than the sum of its proper divisors (49155373908).

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

21333104460 is a wasteful number, since it uses less digits than its factorization.

21333104460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21333104460 its reverse (6440133312), we get a palindrome (27773237772).

The spelling of 21333104460 in words is "twenty-one billion, three hundred thirty-three million, one hundred four thousand, four hundred sixty".