| Base | Representation |
|---|---|
| bin | 1001011000100010111011… |
| … | …00000000110101011100000 |
| 3 | 2201001122111011111020211100 |
| 4 | 10230101131200012223200 |
| 5 | 10201034120421241130 |
| 6 | 111515222302114400 |
| 7 | 4226541262351614 |
| oct | 454213540065340 |
| 9 | 81048434436740 |
| 10 | 20634591587040 |
| 11 | 663609900a9a2 |
| 12 | 2393156b7ba00 |
| 13 | b68aab669232 |
| 14 | 514a10697344 |
| 15 | 25bb469acc60 |
| hex | 12c45d806ae0 |
20634591587040 has 1152 divisors, whose sum is σ = 79527108286080. Its totient is φ = 4841275392000.
The previous prime is 20634591587039. The next prime is 20634591587041. The reversal of 20634591587040 is 4078519543602.
It is a happy number.
20634591587040 is a `hidden beast` number, since 2 + 0 + 6 + 3 + 4 + 59 + 1 + 587 + 0 + 4 + 0 = 666.
It is an interprime number because it is at equal distance from previous prime (20634591587039) and next prime (20634591587041).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20634591587041) by changing a digit.
It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 27115100260 + ... + 27115101020.
It is an arithmetic number, because the mean of its divisors is an integer number (69033948165).
It is a 1-persistent number, because it is pandigital, but 2⋅20634591587040 = 41269183174080 is not.
Almost surely, 220634591587040 is an apocalyptic number.
20634591587040 is a gapful number since it is divisible by the number (20) 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 20634591587040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39763554143040).
20634591587040 is an abundant number, since it is smaller than the sum of its proper divisors (58892516699040).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20634591587040 is a wasteful number, since it uses less digits than its factorization.
20634591587040 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1516 (or 1505 counting only the distinct ones).
The product of its (nonzero) digits is 7257600, while the sum is 54.
The spelling of 20634591587040 in words is "twenty trillion, six hundred thirty-four billion, five hundred ninety-one million, five hundred eighty-seven thousand, forty".
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