Base | Representation |
---|---|
bin | 100101010010100100… |
… | …1010001001000100000 |
3 | 21122200220210122002020 |
4 | 1022211021101020200 |
5 | 2303001000101230 |
6 | 100442134021440 |
7 | 5533313314122 |
oct | 1124511211040 |
9 | 248626718066 |
10 | 80080081440 |
11 | 30a64133497 |
12 | 1362a7a7880 |
13 | 77228c3298 |
14 | 3c39663212 |
15 | 213a53b810 |
hex | 12a5251220 |
80080081440 has 96 divisors (see below), whose sum is σ = 257619398400. Its totient is φ = 20900327424.
The previous prime is 80080081429. The next prime is 80080081453. The reversal of 80080081440 is 4418008008.
It is a tau number, because it is divible by the number of its divisors (96).
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1752265 + ... + 1797384.
It is an arithmetic number, because the mean of its divisors is an integer number (2683535400).
Almost surely, 280080081440 is an apocalyptic number.
80080081440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
80080081440 is an abundant number, since it is smaller than the sum of its proper divisors (177539316960).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80080081440 is a wasteful number, since it uses less digits than its factorization.
80080081440 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3549714 (or 3549706 counting only the distinct ones).
The product of its (nonzero) digits is 8192, while the sum is 33.
Adding to 80080081440 its reverse (4418008008), we get a palindrome (84498089448).
The spelling of 80080081440 in words is "eighty billion, eighty million, eighty-one thousand, four hundred forty".
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