Base | Representation |
---|---|
bin | 11101101000010111001… |
… | …01110100100001001000 |
3 | 10121022220020222201110200 |
4 | 32310023211310201020 |
5 | 113140033014303333 |
6 | 2055413125012200 |
7 | 133361336526264 |
oct | 16641345644110 |
9 | 3538806881420 |
10 | 1018101712968 |
11 | 36285796985a |
12 | 145394254060 |
13 | 750115bc4c2 |
14 | 373c258d0a4 |
15 | 1b73aa11c13 |
hex | ed0b974848 |
1018101712968 has 36 divisors (see below), whose sum is σ = 2757381994185. Its totient is φ = 339364383744.
The previous prime is 1018101712963. The next prime is 1018101713023. The reversal of 1018101712968 is 8692171018101.
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.
1018101712968 is a `hidden beast` number, since 10 + 181 + 0 + 171 + 296 + 8 = 666.
It can be written as a sum of positive squares in 2 ways, for example, as 716193223524 + 301908489444 = 846282^2 + 549462^2 .
It is a tau number, because it is divible by the number of its divisors (36).
It is an ABA number since it can be written as A⋅BA, here for A=2, B=713478.
It is not an unprimeable number, because it can be changed into a prime (1018101712963) by changing a digit.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8502280 + ... + 8621192.
Almost surely, 21018101712968 is an apocalyptic number.
1018101712968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
1018101712968 is an abundant number, since it is smaller than the sum of its proper divisors (1739280281217).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1018101712968 is an frugal number, since it uses more digits than its factorization.
1018101712968 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 237838 (or 118918 counting only the distinct ones).
The product of its (nonzero) digits is 48384, while the sum is 45.
The spelling of 1018101712968 in words is "one trillion, eighteen billion, one hundred one million, seven hundred twelve thousand, nine hundred sixty-eight".
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