Base | Representation |
---|---|
bin | 100101100100011010… |
… | …0000000010000000000 |
3 | 21201020121210210020121 |
4 | 1023020310000100000 |
5 | 2310212143041130 |
6 | 101021351550024 |
7 | 5554200552634 |
oct | 1131064002000 |
9 | 251217723217 |
10 | 80678487040 |
11 | 312409a2478 |
12 | 1377708b314 |
13 | 77b9881238 |
14 | 3c94d12dc4 |
15 | 2172d41d7a |
hex | 12c8d00400 |
80678487040 has 264 divisors, whose sum is σ = 210747329280. Its totient is φ = 29552394240.
The previous prime is 80678487037. The next prime is 80678487047. The reversal of 80678487040 is 4078487608.
It is not an unprimeable number, because it can be changed into a prime (80678487047) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93485649 + ... + 93486511.
Almost surely, 280678487040 is an apocalyptic number.
80678487040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 80678487040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105373664640).
80678487040 is an abundant number, since it is smaller than the sum of its proper divisors (130068842240).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80678487040 is a wasteful number, since it uses less digits than its factorization.
80678487040 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 969 (or 920 counting only the distinct ones).
The product of its (nonzero) digits is 2408448, while the sum is 52.
The spelling of 80678487040 in words is "eighty billion, six hundred seventy-eight million, four hundred eighty-seven thousand, forty".
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