Base | Representation |
---|---|
bin | 100101111010110011… |
… | …1001111000000101000 |
3 | 21210012000010102001220 |
4 | 1023311213033000220 |
5 | 2313232102124334 |
6 | 101224121542040 |
7 | 5611625360115 |
oct | 1136547170050 |
9 | 253160112056 |
10 | 81430114344 |
11 | 315971a4167 |
12 | 13946944920 |
13 | 78a94c8617 |
14 | 3d26a8990c |
15 | 21b8d11449 |
hex | 12f59cf028 |
81430114344 has 16 divisors (see below), whose sum is σ = 203575285920. Its totient is φ = 27143371440.
The previous prime is 81430114343. The next prime is 81430114397. The reversal of 81430114344 is 44341103418.
It is not an unprimeable number, because it can be changed into a prime (81430114343) 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, 1696460692 + ... + 1696460739.
It is an arithmetic number, because the mean of its divisors is an integer number (12723455370).
Almost surely, 281430114344 is an apocalyptic number.
It is an amenable number.
81430114344 is an abundant number, since it is smaller than the sum of its proper divisors (122145171576).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
81430114344 is a wasteful number, since it uses less digits than its factorization.
81430114344 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3392921440 (or 3392921436 counting only the distinct ones).
The product of its (nonzero) digits is 18432, while the sum is 33.
The spelling of 81430114344 in words is "eighty-one billion, four hundred thirty million, one hundred fourteen thousand, three hundred forty-four".
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