Base | Representation |
---|---|
bin | 111011101111011100… |
… | …0010111111111000001 |
3 | 110021010222121112220111 |
4 | 1313132320113333001 |
5 | 4100221100344331 |
6 | 134534232111321 |
7 | 12161141445025 |
oct | 1673670277701 |
9 | 407128545814 |
10 | 128293371841 |
11 | 4a45529a138 |
12 | 20a45235541 |
13 | c13744739b |
14 | 62d097a385 |
15 | 350d100db1 |
hex | 1ddee17fc1 |
128293371841 has 8 divisors (see below), whose sum is σ = 131282316000. Its totient is φ = 125304672192.
The previous prime is 128293371839. The next prime is 128293371883. The reversal of 128293371841 is 148173392821.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 128293371841 - 21 = 128293371839 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (128293311841) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1405410 + ... + 1493908.
It is an arithmetic number, because the mean of its divisors is an integer number (16410289500).
Almost surely, 2128293371841 is an apocalyptic number.
It is an amenable number.
128293371841 is a deficient number, since it is larger than the sum of its proper divisors (2988944159).
128293371841 is an equidigital number, since it uses as much as digits as its factorization.
128293371841 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 122255.
The product of its digits is 580608, while the sum is 49.
The spelling of 128293371841 in words is "one hundred twenty-eight billion, two hundred ninety-three million, three hundred seventy-one thousand, eight hundred forty-one".
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