| Base | Representation |
|---|---|
| bin | 100101100010100111… |
| … | …1001110111110000100 |
| 3 | 21201002102221221221011 |
| 4 | 1023011033032332010 |
| 5 | 2310101320010411 |
| 6 | 101011410332004 |
| 7 | 5552542040200 |
| oct | 1130517167604 |
| 9 | 251072857834 |
| 10 | 80618516356 |
| 11 | 31210061624 |
| 12 | 1375ab8a004 |
| 13 | 77aa314721 |
| 14 | 3c8ad81b00 |
| 15 | 216c947c21 |
| hex | 12c53cef84 |
80618516356 has 81 divisors (see below), whose sum is σ = 174484296399. Its totient is φ = 32491135488.
The previous prime is 80618516353. The next prime is 80618516359. The reversal of 80618516356 is 65361581608.
The square root of 80618516356 is 283934.
It is a perfect power (a square), and thus also a powerful number.
It is an interprime number because it is at equal distance from previous prime (80618516353) and next prime (80618516359).
It can be written as a sum of positive squares in 4 ways, for example, as 7459085956 + 73159430400 = 86366^2 + 270480^2 .
It is a super-3 number, since 3×806185163563 (a number of 34 digits) contains 333 as substring.
It is a Harshad number since it is a multiple of its sum of digits (49).
It is not an unprimeable number, because it can be changed into a prime (80618516351) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 67575696 + ... + 67576888.
Almost surely, 280618516356 is an apocalyptic number.
80618516356 is the 283934-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 80618516356
80618516356 is an abundant number, since it is smaller than the sum of its proper divisors (93865780043).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80618516356 is a wasteful number, since it uses less digits than its factorization.
80618516356 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2438 (or 1219 counting only the distinct ones).
The product of its (nonzero) digits is 1036800, while the sum is 49.
Multiplying 80618516356 by its sum of digits (49), we get a square (3950307301444 = 19875382).
80618516356 divided by its sum of digits (49) gives a square (1645275844 = 405622).
The spelling of 80618516356 in words is "eighty billion, six hundred eighteen million, five hundred sixteen thousand, three hundred fifty-six".
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