| Base | Representation |
|---|---|
| bin | 1011111100110011… |
| … | …10011100100011100 |
| 3 | 121120010012100211200 |
| 4 | 11332121303210130 |
| 5 | 101114402130330 |
| 6 | 2540341515500 |
| 7 | 314662136004 |
| oct | 57631634434 |
| 9 | 17503170750 |
| 10 | 6415661340 |
| 11 | 27a2523360 |
| 12 | 12b0712b90 |
| 13 | 7b3231a1a |
| 14 | 44c0cd004 |
| 15 | 278391a60 |
| hex | 17e67391c |
6415661340 has 144 divisors (see below), whose sum is σ = 21257099136. Its totient is φ = 1553328000.
The previous prime is 6415661333. The next prime is 6415661341. The reversal of 6415661340 is 431665146.
It is a happy number.
6415661340 is a `hidden beast` number, since 6 + 41 + 566 + 13 + 40 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 6415661295 and 6415661304.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (6415661341) by changing a digit.
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 47 ways as a sum of consecutive naturals, for example, 2079439 + ... + 2082521.
It is an arithmetic number, because the mean of its divisors is an integer number (147618744).
Almost surely, 26415661340 is an apocalyptic number.
6415661340 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 6415661340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10628549568).
6415661340 is an abundant number, since it is smaller than the sum of its proper divisors (14841437796).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6415661340 is a wasteful number, since it uses less digits than its factorization.
6415661340 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4160 (or 4155 counting only the distinct ones).
The product of its (nonzero) digits is 51840, while the sum is 36.
The square root of 6415661340 is about 80097.8235659372. The cubic root of 6415661340 is about 1858.1487477292.
The spelling of 6415661340 in words is "six billion, four hundred fifteen million, six hundred sixty-one thousand, three hundred forty".
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