Base | Representation |
---|---|
bin | 10111111111000000… |
… | …00110111110111001 |
3 | 1020020101111002202120 |
4 | 23333200012332321 |
5 | 202332343320011 |
6 | 5525420551453 |
7 | 634043541300 |
oct | 137740067671 |
9 | 36211432676 |
10 | 12876541881 |
11 | 5508521555 |
12 | 25b43b2589 |
13 | 12a2936a68 |
14 | 8a21cd437 |
15 | 5056b6a06 |
hex | 2ff806fb9 |
12876541881 has 36 divisors (see below), whose sum is σ = 20877997392. Its totient is φ = 7038067344.
The previous prime is 12876541861. The next prime is 12876541921. The reversal of 12876541881 is 18814567821.
It is not a de Polignac number, because 12876541881 - 29 = 12876541369 is a prime.
It is a super-2 number, since 2×128765418812 (a number of 21 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (12876541841) by changing a digit.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5031 + ... + 160556.
It is an arithmetic number, because the mean of its divisors is an integer number (579944372).
Almost surely, 212876541881 is an apocalyptic number.
It is an amenable number.
12876541881 is a deficient number, since it is larger than the sum of its proper divisors (8001455511).
12876541881 is a wasteful number, since it uses less digits than its factorization.
12876541881 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 165650 (or 165620 counting only the distinct ones).
The product of its digits is 860160, while the sum is 51.
The spelling of 12876541881 in words is "twelve billion, eight hundred seventy-six million, five hundred forty-one thousand, eight hundred eighty-one".
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