Base | Representation |
---|---|
bin | 10100101100100011… |
… | …00001100101100010 |
3 | 1001200100111220220000 |
4 | 22112101201211202 |
5 | 140223421023020 |
6 | 5034313400430 |
7 | 542225612436 |
oct | 122621414542 |
9 | 31610456800 |
10 | 11111111010 |
11 | 4791a2917a |
12 | 21a1109116 |
13 | 1080c5b5cc |
14 | 7759549c6 |
15 | 4506db090 |
hex | 296461962 |
11111111010 has 80 divisors (see below), whose sum is σ = 29892684096. Its totient is φ = 2961362592.
The previous prime is 11111110979. The next prime is 11111111059. The reversal of 11111111010 is 1011111111.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a junction number, because it is equal to n+sod(n) for n = 11111110983 and 11111111001.
It is an unprimeable number.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2919769 + ... + 2923571.
Almost surely, 211111111010 is an apocalyptic number.
11111111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
11111111010 is an abundant number, since it is smaller than the sum of its proper divisors (18781573086).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11111111010 is a wasteful number, since it uses less digits than its factorization.
11111111010 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7429 (or 7420 counting only the distinct ones).
The product of its (nonzero) digits is 1, while the sum is 9.
Adding to 11111111010 its reverse (1011111111), we get a palindrome (12122222121).
The spelling of 11111111010 in words is "eleven billion, one hundred eleven million, one hundred eleven thousand, ten".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.072 sec. • engine limits •