Base | Representation |
---|---|
bin | 100101011111011110… |
… | …0110101110101010100 |
3 | 21200211002110202220221 |
4 | 1022332330311311110 |
5 | 2304342314002013 |
6 | 100553121404124 |
7 | 5550121322200 |
oct | 1127674656524 |
9 | 250732422827 |
10 | 80513031508 |
11 | 31166564268 |
12 | 1372b799644 |
13 | 7791500560 |
14 | 3c7ad63b00 |
15 | 216355d08d |
hex | 12bef35d54 |
80513031508 has 36 divisors (see below), whose sum is σ = 176509343892. Its totient is φ = 31851308160.
The previous prime is 80513031493. The next prime is 80513031517.
80513031508 is nontrivially palindromic in base 10.
It can be written as a sum of positive squares in 2 ways, for example, as 27397532484 + 53115499024 = 165522^2 + 230468^2 .
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15796713 + ... + 15801808.
Almost surely, 280513031508 is an apocalyptic number.
It is an amenable number.
80513031508 is an abundant number, since it is smaller than the sum of its proper divisors (95996312384).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80513031508 is a wasteful number, since it uses less digits than its factorization.
80513031508 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 31598552 (or 31598543 counting only the distinct ones).
The product of its (nonzero) digits is 14400, while the sum is 34.
It can be divided in two parts, 805130 and 31508, that added together give a palindrome (836638).
The spelling of 80513031508 in words is "eighty billion, five hundred thirteen million, thirty-one thousand, five hundred eight".
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