Base | Representation |
---|---|
bin | 10011101010010000… |
… | …001001000000000011 |
3 | 2000111012010112022222 |
4 | 103222100021000003 |
5 | 321213123001044 |
6 | 13410415521255 |
7 | 1345060526555 |
oct | 235220110003 |
9 | 60435115288 |
10 | 21109968899 |
11 | 8a53033098 |
12 | 411182922b |
13 | 1cb5638c76 |
14 | 104389b4d5 |
15 | 8384208ee |
hex | 4ea409003 |
21109968899 has 2 divisors, whose sum is σ = 21109968900. Its totient is φ = 21109968898.
The previous prime is 21109968883. The next prime is 21109968911. The reversal of 21109968899 is 99886990112.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 21109968899 - 24 = 21109968883 is a prime.
It is not a weakly prime, because it can be changed into another prime (21109968839) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10554984449 + 10554984450.
It is an arithmetic number, because the mean of its divisors is an integer number (10554984450).
Almost surely, 221109968899 is an apocalyptic number.
21109968899 is a deficient number, since it is larger than the sum of its proper divisors (1).
21109968899 is an equidigital number, since it uses as much as digits as its factorization.
21109968899 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 5038848, while the sum is 62.
The spelling of 21109968899 in words is "twenty-one billion, one hundred nine million, nine hundred sixty-eight thousand, eight hundred ninety-nine".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.065 sec. • engine limits •