Base | Representation |
---|---|
bin | 100100011101100111… |
… | …0100000000000000000 |
3 | 21111010002001000010120 |
4 | 1020323032200000000 |
5 | 2240331041140120 |
6 | 55545534300240 |
7 | 5441265045312 |
oct | 1107316400000 |
9 | 244102030116 |
10 | 78303068160 |
11 | 3023204a079 |
12 | 13213657680 |
13 | 74cb6c0c35 |
14 | 3b0b6517b2 |
15 | 2084524140 |
hex | 123b3a0000 |
78303068160 has 144 divisors (see below), whose sum is σ = 250575153696. Its totient is φ = 20880293888.
The previous prime is 78303068159. The next prime is 78303068177. The reversal of 78303068160 is 6186030387.
It is a super-2 number, since 2×783030681602 (a number of 23 digits) contains 22 as substring.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1946167 + ... + 1985993.
It is an arithmetic number, because the mean of its divisors is an integer number (1740105234).
Almost surely, 278303068160 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 78303068160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125287576848).
78303068160 is an abundant number, since it is smaller than the sum of its proper divisors (172272085536).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
78303068160 is an frugal number, since it uses more digits than its factorization.
78303068160 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 39869 (or 39837 counting only the distinct ones).
The product of its (nonzero) digits is 145152, while the sum is 42.
The spelling of 78303068160 in words is "seventy-eight billion, three hundred three million, sixty-eight thousand, one hundred sixty".
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