| Base | Representation |
|---|---|
| bin | 1000010101000110000001… |
| … | …10000000110111011000000 |
| 3 | 2101212002022102211212202100 |
| 4 | 10022203000300012323000 |
| 5 | 4400101130420340010 |
| 6 | 102542411334150400 |
| 7 | 3600233462242461 |
| oct | 412430060067300 |
| 9 | 71762272755670 |
| 10 | 18316974386880 |
| 11 | 5922204578664 |
| 12 | 2079b517b2400 |
| 13 | a2b38b474390 |
| 14 | 474791042d68 |
| 15 | 21b6ee8802c0 |
| hex | 10a8c0c06ec0 |
18316974386880 has 672 divisors, whose sum is σ = 71587038781440. Its totient is φ = 4261506785280.
The previous prime is 18316974386831. The next prime is 18316974386881. The reversal of 18316974386880 is 8868347961381.
18316974386880 is a `hidden beast` number, since 1 + 8 + 3 + 169 + 7 + 4 + 386 + 8 + 80 = 666.
It is a super-2 number, since 2×183169743868802 (a number of 27 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (72).
It is a junction number, because it is equal to n+sod(n) for n = 18316974386799 and 18316974386808.
It is not an unprimeable number, because it can be changed into a prime (18316974386881) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 306566289 + ... + 306626031.
It is an arithmetic number, because the mean of its divisors is an integer number (106528331520).
Almost surely, 218316974386880 is an apocalyptic number.
18316974386880 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 18316974386880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35793519390720).
18316974386880 is an abundant number, since it is smaller than the sum of its proper divisors (53270064394560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18316974386880 is a wasteful number, since it uses less digits than its factorization.
18316974386880 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 60229 (or 60216 counting only the distinct ones).
The product of its (nonzero) digits is 334430208, while the sum is 72.
The spelling of 18316974386880 in words is "eighteen trillion, three hundred sixteen billion, nine hundred seventy-four million, three hundred eighty-six thousand, eight hundred eighty".
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