Base | Representation |
---|---|
bin | 10111010000010001… |
… | …10111111101101001 |
3 | 1012020001221010101200 |
4 | 23220020313331221 |
5 | 201032022400311 |
6 | 5422455434413 |
7 | 621244065036 |
oct | 135010677551 |
9 | 35201833350 |
10 | 12484575081 |
11 | 5327243050 |
12 | 2505085a09 |
13 | 123c678a44 |
14 | 86611a38d |
15 | 4d108d556 |
hex | 2e8237f69 |
12484575081 has 48 divisors (see below), whose sum is σ = 21422232000. Its totient is φ = 6920968320.
The previous prime is 12484575017. The next prime is 12484575091. The reversal of 12484575081 is 18057548421.
12484575081 is a `hidden beast` number, since 12 + 4 + 84 + 57 + 508 + 1 = 666.
It is not a de Polignac number, because 12484575081 - 26 = 12484575017 is a prime.
It is a super-2 number, since 2×124845750812 (a number of 21 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (12484575091) 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, 59886 + ... + 168983.
It is an arithmetic number, because the mean of its divisors is an integer number (446296500).
Almost surely, 212484575081 is an apocalyptic number.
12484575081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
12484575081 is a deficient number, since it is larger than the sum of its proper divisors (8937656919).
12484575081 is a wasteful number, since it uses less digits than its factorization.
12484575081 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 228934 (or 228931 counting only the distinct ones).
The product of its (nonzero) digits is 358400, while the sum is 45.
The spelling of 12484575081 in words is "twelve billion, four hundred eighty-four million, five hundred seventy-five thousand, eighty-one".
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