| Base | Representation |
|---|---|
| bin | 1001001110100101001000000… |
| … | …1100110001000111110000000 |
| 3 | 10011011011020001100200202120000 |
| 4 | 2103221102001212020332000 |
| 5 | 1140102421131042303340 |
| 6 | 10221015043533320000 |
| 7 | 253526652436365030 |
| oct | 22351220146107600 |
| 9 | 3134136040622500 |
| 10 | 649349689806720 |
| 11 | 1789a2725425701 |
| 12 | 609b43a1336000 |
| 13 | 21b4354a4a6066 |
| 14 | b64c99a9d78c0 |
| 15 | 5011120295d30 |
| hex | 24e9481988f80 |
649349689806720 has 1280 divisors, whose sum is σ = 2672303931601920. Its totient is φ = 147187750993920.
The previous prime is 649349689806647. The next prime is 649349689806731. The reversal of 649349689806720 is 27608986943946.
649349689806720 is a `hidden beast` number, since 6 + 49 + 3 + 496 + 8 + 9 + 8 + 0 + 67 + 20 = 666.
It is a Harshad number since it is a multiple of its sum of digits (81).
It is a self number, because there is not a number n which added to its sum of digits gives 649349689806720.
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 159 ways as a sum of consecutive naturals, for example, 84473742717 + ... + 84473750403.
It is an arithmetic number, because the mean of its divisors is an integer number (2087737446564).
Almost surely, 2649349689806720 is an apocalyptic number.
649349689806720 is a gapful number since it is divisible by the number (60) 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 649349689806720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1336151965800960).
649349689806720 is an abundant number, since it is smaller than the sum of its proper divisors (2022954241795200).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
649349689806720 is a wasteful number, since it uses less digits than its factorization.
649349689806720 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9633 (or 9612 counting only the distinct ones).
The product of its (nonzero) digits is 6772211712, while the sum is 81.
The spelling of 649349689806720 in words is "six hundred forty-nine trillion, three hundred forty-nine billion, six hundred eighty-nine million, eight hundred six thousand, seven hundred twenty".
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