Base | Representation |
---|---|
bin | 1001011000110100010101… |
… | …00110100101011001000000 |
3 | 2201002112121112210010120211 |
4 | 10230122022212211121000 |
5 | 10201212241134220013 |
6 | 111523405544243504 |
7 | 4230322014251542 |
oct | 454321246453100 |
9 | 81075545703524 |
10 | 20643938195008 |
11 | 663a054a19897 |
12 | 2394b25170594 |
13 | b6993ab857ab |
14 | 515259b35692 |
15 | 25bee230323d |
hex | 12c68a9a5640 |
20643938195008 has 28 divisors (see below), whose sum is σ = 40966109119180. Its totient is φ = 10321768968192.
The previous prime is 20643938194987. The next prime is 20643938195009. The reversal of 20643938195008 is 80059183934602.
It can be written as a sum of positive squares in 2 ways, for example, as 11164633187904 + 9479305007104 = 3341352^2 + 3078848^2 .
It is a super-2 number, since 2×206439381950082 (a number of 27 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (20643938195009) 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, 227560 + ... + 6429592.
It is an arithmetic number, because the mean of its divisors is an integer number (1463075325685).
Almost surely, 220643938195008 is an apocalyptic number.
It is an amenable number.
20643938195008 is a deficient number, since it is larger than the sum of its proper divisors (20322170924172).
20643938195008 is an equidigital number, since it uses as much as digits as its factorization.
20643938195008 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6254054 (or 6254044 counting only the distinct ones).
The product of its (nonzero) digits is 11197440, while the sum is 58.
The spelling of 20643938195008 in words is "twenty trillion, six hundred forty-three billion, nine hundred thirty-eight million, one hundred ninety-five thousand, eight".
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