Base | Representation |
---|---|
bin | 10111111111100111… |
… | …10101001110100111 |
3 | 1020020202012202212220 |
4 | 23333303311032213 |
5 | 202340204241124 |
6 | 5530123443423 |
7 | 634135513530 |
oct | 137763651647 |
9 | 36222182786 |
10 | 12881712039 |
11 | 5510432a09 |
12 | 25b6086573 |
13 | 12a3a27121 |
14 | 8a2b77687 |
15 | 505d88879 |
hex | 2ffcf53a7 |
12881712039 has 16 divisors (see below), whose sum is σ = 20783939328. Its totient is φ = 6927979392.
The previous prime is 12881712031. The next prime is 12881712047. The reversal of 12881712039 is 93021718821.
It is an interprime number because it is at equal distance from previous prime (12881712031) and next prime (12881712047).
It is not a de Polignac number, because 12881712039 - 23 = 12881712031 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12881712031) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18041257 + ... + 18041970.
It is an arithmetic number, because the mean of its divisors is an integer number (1298996208).
Almost surely, 212881712039 is an apocalyptic number.
12881712039 is a deficient number, since it is larger than the sum of its proper divisors (7902227289).
12881712039 is a wasteful number, since it uses less digits than its factorization.
12881712039 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 36083254.
The product of its (nonzero) digits is 48384, while the sum is 42.
The spelling of 12881712039 in words is "twelve billion, eight hundred eighty-one million, seven hundred twelve thousand, thirty-nine".
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