| Base | Representation |
|---|---|
| bin | 11111011110000001100… |
| … | …00101100101110010000 |
| 3 | 10211100221121201221212000 |
| 4 | 33233000300230232100 |
| 5 | 120203420310022424 |
| 6 | 2144421241234000 |
| 7 | 141055620002646 |
| oct | 17570060545620 |
| 9 | 3740847657760 |
| 10 | 1081270782864 |
| 11 | 387623193a48 |
| 12 | 155683492900 |
| 13 | 7ac6a778a7c |
| 14 | 3a495c99196 |
| 15 | 1d1d65a33c9 |
| hex | fbc0c2cb90 |
1081270782864 has 320 divisors, whose sum is σ = 3330052577280. Its totient is φ = 335038809600.
The previous prime is 1081270782857. The next prime is 1081270782871. The reversal of 1081270782864 is 4682870721801.
1081270782864 is a `hidden beast` number, since 10 + 81 + 270 + 7 + 8 + 286 + 4 = 666.
It is an interprime number because it is at equal distance from previous prime (1081270782857) and next prime (1081270782871).
It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a self number, because there is not a number n which added to its sum of digits gives 1081270782864.
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 63 ways as a sum of consecutive naturals, for example, 533433019 + ... + 533435045.
It is an arithmetic number, because the mean of its divisors is an integer number (10406414304).
Almost surely, 21081270782864 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1081270782864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1665026288640).
1081270782864 is an abundant number, since it is smaller than the sum of its proper divisors (2248781794416).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1081270782864 is a wasteful number, since it uses less digits than its factorization.
1081270782864 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3555 (or 3543 counting only the distinct ones).
The product of its (nonzero) digits is 2408448, while the sum is 54.
The spelling of 1081270782864 in words is "one trillion, eighty-one billion, two hundred seventy million, seven hundred eighty-two thousand, eight hundred sixty-four".
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