| Base | Representation |
|---|---|
| bin | 1000110101001110101001… |
| … | …01111000001110100000000 |
| 3 | 2112202122021222112202020000 |
| 4 | 10122213110233001310000 |
| 5 | 10021143421224240300 |
| 6 | 105145534310120000 |
| 7 | 4043062236205050 |
| oct | 432472457016400 |
| 9 | 75678258482200 |
| 10 | 19421116243200 |
| 11 | 62084a38a2601 |
| 12 | 2217b38650000 |
| 13 | aab53237b2b9 |
| 14 | 4b1db6629560 |
| 15 | 23a2c3c77c00 |
| hex | 11a9d4bc1d00 |
19421116243200 has 4320 divisors, whose sum is σ = 92858330019840. Its totient is φ = 3902083891200.
The previous prime is 19421116243187. The next prime is 19421116243241. The reversal of 19421116243200 is 234261112491.
19421116243200 is a `hidden beast` number, since 1 + 9 + 4 + 2 + 1 + 1 + 1 + 624 + 3 + 20 + 0 = 666.
It is a tau number, because it is divible by the number of its divisors (4320).
It is a super-2 number, since 2×194211162432002 (a number of 27 digits) contains 22 as substring.
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 479 ways as a sum of consecutive naturals, for example, 58674067035 + ... + 58674067365.
Almost surely, 219421116243200 is an apocalyptic number.
19421116243200 is a gapful number since it is divisible by the number (10) 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 19421116243200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46429165009920).
19421116243200 is an abundant number, since it is smaller than the sum of its proper divisors (73437213776640).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19421116243200 is a wasteful number, since it uses less digits than its factorization.
19421116243200 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 455 (or 427 counting only the distinct ones).
The product of its (nonzero) digits is 20736, while the sum is 36.
Adding to 19421116243200 its reverse (234261112491), we get a palindrome (19655377355691).
The spelling of 19421116243200 in words is "nineteen trillion, four hundred twenty-one billion, one hundred sixteen million, two hundred forty-three thousand, two hundred".
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