Base | Representation |
---|---|
bin | 10111111111011110… |
… | …01101011011100110 |
3 | 1020020122221012220101 |
4 | 23333233031123212 |
5 | 202334402003304 |
6 | 5530041454314 |
7 | 634122306313 |
oct | 137757153346 |
9 | 36218835811 |
10 | 12880500454 |
11 | 550a7856a8 |
12 | 25b57a139a |
13 | 12a36c1803 |
14 | 8a293dd0a |
15 | 505be98a4 |
hex | 2ffbcd6e6 |
12880500454 has 4 divisors (see below), whose sum is σ = 19320750684. Its totient is φ = 6440250226.
The previous prime is 12880500443. The next prime is 12880500491. The reversal of 12880500454 is 45400508821.
It is a semiprime because it is the product of two primes.
It is a super-2 number, since 2×128805004542 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220125112 + ... + 3220125115.
It is an arithmetic number, because the mean of its divisors is an integer number (4830187671).
Almost surely, 212880500454 is an apocalyptic number.
12880500454 is a deficient number, since it is larger than the sum of its proper divisors (6440250230).
12880500454 is an equidigital number, since it uses as much as digits as its factorization.
12880500454 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6440250229.
The product of its (nonzero) digits is 51200, while the sum is 37.
The spelling of 12880500454 in words is "twelve billion, eight hundred eighty million, five hundred thousand, four hundred fifty-four".
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