Base | Representation |
---|---|
bin | 10111111111101001… |
… | …01110100100100010 |
3 | 1020020202122201001222 |
4 | 23333310232210202 |
5 | 202340234300124 |
6 | 5530132455042 |
7 | 634140512354 |
oct | 137764564442 |
9 | 36222581058 |
10 | 12881946914 |
11 | 5510583421 |
12 | 25b617a482 |
13 | 12a3aa9cc5 |
14 | 8a2bd90d4 |
15 | 505dd325e |
hex | 2ffd2e922 |
12881946914 has 32 divisors (see below), whose sum is σ = 21065616000. Its totient is φ = 5884752384.
The previous prime is 12881946893. The next prime is 12881946947. The reversal of 12881946914 is 41964918821.
It is a happy number.
It is a super-2 number, since 2×128819469142 (a number of 21 digits) contains 22 as substring.
It is a Curzon number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017467 + ... + 1030049.
It is an arithmetic number, because the mean of its divisors is an integer number (658300500).
Almost surely, 212881946914 is an apocalyptic number.
12881946914 is a deficient number, since it is larger than the sum of its proper divisors (8183669086).
12881946914 is a wasteful number, since it uses less digits than its factorization.
12881946914 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13562.
The product of its digits is 995328, while the sum is 53.
The spelling of 12881946914 in words is "twelve billion, eight hundred eighty-one million, nine hundred forty-six thousand, nine hundred fourteen".
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