| Base | Representation |
|---|---|
| bin | 1001110000010001101001… |
| … | …10001011101100100000000 |
| 3 | 2210221121002001001202011000 |
| 4 | 10320020310301131210000 |
| 5 | 10302414000211320400 |
| 6 | 113341545534452000 |
| 7 | 4342464544116633 |
| oct | 470106461354400 |
| 9 | 83847061052130 |
| 10 | 21449952057600 |
| 11 | 691a967812560 |
| 12 | 24a5189664000 |
| 13 | bc794ca42931 |
| 14 | 54227ca77c1a |
| 15 | 272e6856a600 |
| hex | 138234c5d900 |
21449952057600 has 1728 divisors, whose sum is σ = 90068935219200. Its totient is φ = 4944310272000.
The previous prime is 21449952057553. The next prime is 21449952057601. The reversal of 21449952057600 is 675025994412.
It is a happy number.
21449952057600 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 9 + 9 + 5 + 20 + 5 + 7 + 600 = 666.
It is a tau number, because it is divible by the number of its divisors (1728).
It is a Harshad number since it is a multiple of its sum of digits (54).
It is not an unprimeable number, because it can be changed into a prime (21449952057601) 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 191 ways as a sum of consecutive naturals, for example, 7825592230 + ... + 7825594970.
It is an arithmetic number, because the mean of its divisors is an integer number (52123226400).
Almost surely, 221449952057600 is an apocalyptic number.
21449952057600 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 21449952057600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45034467609600).
21449952057600 is an abundant number, since it is smaller than the sum of its proper divisors (68618983161600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21449952057600 is a wasteful number, since it uses less digits than its factorization.
21449952057600 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2989 (or 2964 counting only the distinct ones).
The product of its (nonzero) digits is 5443200, while the sum is 54.
The spelling of 21449952057600 in words is "twenty-one trillion, four hundred forty-nine billion, nine hundred fifty-two million, fifty-seven thousand, six hundred".
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