Base | Representation |
---|---|
bin | 10111011111010000… |
… | …10001001101101001 |
3 | 1012112211101211202221 |
4 | 23233220101031221 |
5 | 201311210323411 |
6 | 5443145154041 |
7 | 624331214041 |
oct | 135750211551 |
9 | 35484354687 |
10 | 12610245481 |
11 | 5391178089 |
12 | 253b18b921 |
13 | 125c709922 |
14 | 878ab0721 |
15 | 4dc114071 |
hex | 2efa11369 |
12610245481 has 4 divisors (see below), whose sum is σ = 12612311764. Its totient is φ = 12608179200.
The previous prime is 12610245469. The next prime is 12610245541. The reversal of 12610245481 is 18454201621.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18454201621 = 263 ⋅70168067.
It can be written as a sum of positive squares in 2 ways, for example, as 505845081 + 12104400400 = 22491^2 + 110020^2 .
It is a cyclic number.
It is not a de Polignac number, because 12610245481 - 25 = 12610245449 is a prime.
It is a super-2 number, since 2×126102454812 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12610242481) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1023960 + ... + 1036201.
It is an arithmetic number, because the mean of its divisors is an integer number (3153077941).
Almost surely, 212610245481 is an apocalyptic number.
It is an amenable number.
12610245481 is a deficient number, since it is larger than the sum of its proper divisors (2066283).
12610245481 is an equidigital number, since it uses as much as digits as its factorization.
12610245481 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2066282.
The product of its (nonzero) digits is 15360, while the sum is 34.
The spelling of 12610245481 in words is "twelve billion, six hundred ten million, two hundred forty-five thousand, four hundred eighty-one".
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