Base | Representation |
---|---|
bin | 100101100011111100… |
… | …0111011110010101001 |
3 | 21201012112200002011000 |
4 | 1023013320323302221 |
5 | 2310144212033111 |
6 | 101020040025213 |
7 | 5553622130601 |
oct | 1130770736251 |
9 | 251175602130 |
10 | 80663002281 |
11 | 31233186554 |
12 | 13771a62209 |
13 | 77b65bc064 |
14 | 3c92c41c01 |
15 | 21717d3c56 |
hex | 12c7e3bca9 |
80663002281 has 16 divisors (see below), whose sum is σ = 120119926720. Its totient is φ = 53496702720.
The previous prime is 80663002243. The next prime is 80663002333. The reversal of 80663002281 is 18220036608.
It is not a de Polignac number, because 80663002281 - 210 = 80663001257 is a prime.
It is a super-2 number, since 2×806630022812 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (80663002201) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7734475 + ... + 7744896.
It is an arithmetic number, because the mean of its divisors is an integer number (7507495420).
Almost surely, 280663002281 is an apocalyptic number.
It is an amenable number.
80663002281 is a deficient number, since it is larger than the sum of its proper divisors (39456924439).
80663002281 is a wasteful number, since it uses less digits than its factorization.
80663002281 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15479573 (or 15479567 counting only the distinct ones).
The product of its (nonzero) digits is 27648, while the sum is 36.
Adding to 80663002281 its reverse (18220036608), we get a palindrome (98883038889).
The spelling of 80663002281 in words is "eighty billion, six hundred sixty-three million, two thousand, two hundred eighty-one".
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