Base | Representation |
---|---|
bin | 1001110100101101101001… |
… | …1101010001000101010101 |
3 | 1102020120211002122001111212 |
4 | 2131023122131101011111 |
5 | 2403431340444344011 |
6 | 34550001513511205 |
7 | 2163235060461200 |
oct | 235133235210525 |
9 | 42216732561455 |
10 | 10801212887381 |
11 | 34948500a6a84 |
12 | 1265420412505 |
13 | 60471c48c227 |
14 | 294ad25ba937 |
15 | 13ae6e96908b |
hex | 9d2da751155 |
10801212887381 has 12 divisors (see below), whose sum is σ = 12575208284172. Its totient is φ = 9250422003648.
The previous prime is 10801212887357. The next prime is 10801212887429. The reversal of 10801212887381 is 18378821210801.
It is a happy number.
10801212887381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 2 ways, for example, as 7751268492100 + 3049944395281 = 2784110^2 + 1746409^2 .
It is not a de Polignac number, because 10801212887381 - 218 = 10801212625237 is a prime.
It is a super-4 number, since 4×108012128873814 (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (10801212887321) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92327510 + ... + 92444423.
It is an arithmetic number, because the mean of its divisors is an integer number (1047934023681).
Almost surely, 210801212887381 is an apocalyptic number.
It is an amenable number.
10801212887381 is a deficient number, since it is larger than the sum of its proper divisors (1773995396791).
10801212887381 is a wasteful number, since it uses less digits than its factorization.
10801212887381 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 184773140 (or 184773133 counting only the distinct ones).
The product of its (nonzero) digits is 344064, while the sum is 50.
The spelling of 10801212887381 in words is "ten trillion, eight hundred one billion, two hundred twelve million, eight hundred eighty-seven thousand, three hundred eighty-one".
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