Base | Representation |
---|---|
bin | 111111011101111100… |
… | …100011011111111100 |
3 | 20111220100202121210122 |
4 | 333131330203133330 |
5 | 2104031411220340 |
6 | 51150135154112 |
7 | 4631526462605 |
oct | 773574433774 |
9 | 214810677718 |
10 | 68148148220 |
11 | 269a0942459 |
12 | 1125a815938 |
13 | 65708a1379 |
14 | 3426ac2dac |
15 | 1b8cc63db5 |
hex | fddf237fc |
68148148220 has 12 divisors (see below), whose sum is σ = 143111111304. Its totient is φ = 27259259280.
The previous prime is 68148148219. The next prime is 68148148223. The reversal of 68148148220 is 2284184186.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68148148223) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703703686 + ... + 1703703725.
It is an arithmetic number, because the mean of its divisors is an integer number (11925925942).
Almost surely, 268148148220 is an apocalyptic number.
It is an amenable number.
68148148220 is an abundant number, since it is smaller than the sum of its proper divisors (74962963084).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68148148220 is a wasteful number, since it uses less digits than its factorization.
68148148220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3407407420 (or 3407407418 counting only the distinct ones).
The product of its (nonzero) digits is 196608, while the sum is 44.
The spelling of 68148148220 in words is "sixty-eight billion, one hundred forty-eight million, one hundred forty-eight thousand, two hundred twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.076 sec. • engine limits •