| Base | Representation |
|---|---|
| bin | 101111101010111101… |
| … | …100100111101100000 |
| 3 | 11220010021201021202000 |
| 4 | 233222331210331200 |
| 5 | 1314312240312401 |
| 6 | 35303111324000 |
| 7 | 3461311232406 |
| oct | 575275447540 |
| 9 | 156107637660 |
| 10 | 51186650976 |
| 11 | 1a78759153a |
| 12 | 9b06380600 |
| 13 | 4a9986c176 |
| 14 | 2698187476 |
| 15 | 14e8b45186 |
| hex | beaf64f60 |
51186650976 has 216 divisors, whose sum is σ = 153705769560. Its totient is φ = 16572318336.
The previous prime is 51186650971. The next prime is 51186651011. The reversal of 51186650976 is 67905668115.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
51186650976 is a `hidden beast` number, since 5 + 1 + 1 + 8 + 66 + 509 + 76 = 666.
It is a tau number, because it is divible by the number of its divisors (216).
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (51186650971) by changing a digit.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 285958855 + ... + 285959033.
It is an arithmetic number, because the mean of its divisors is an integer number (711600785).
Almost surely, 251186650976 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 51186650976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76852884780).
51186650976 is an abundant number, since it is smaller than the sum of its proper divisors (102519118584).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
51186650976 is an equidigital number, since it uses as much as digits as its factorization.
51186650976 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 463 (or 227 counting only the distinct ones).
The product of its (nonzero) digits is 2721600, while the sum is 54.
Multiplying 51186650976 by its sum of digits (54), we get a square (2764079152704 = 16625522).
51186650976 divided by its sum of digits (54) gives a square (947900944 = 307882).
The spelling of 51186650976 in words is "fifty-one billion, one hundred eighty-six million, six hundred fifty thousand, nine hundred seventy-six".
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