Base | Representation |
---|---|
bin | 111111101011000101… |
… | …111010111110000000 |
3 | 20112110201210012012020 |
4 | 333223011322332000 |
5 | 2110004342114311 |
6 | 51224054401440 |
7 | 4640145265500 |
oct | 775305727600 |
9 | 215421705166 |
10 | 68368707456 |
11 | 26aa4397915 |
12 | 11300660280 |
13 | 65a74a64aa |
14 | 34480d7a00 |
15 | 1ba22cec06 |
hex | feb17af80 |
68368707456 has 576 divisors, whose sum is σ = 230932080000. Its totient is φ = 17818859520.
The previous prime is 68368707439. The next prime is 68368707467. The reversal of 68368707456 is 65470786386.
It is a self number, because there is not a number n which added to its sum of digits gives 68368707456.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 343561245 + ... + 343561443.
It is an arithmetic number, because the mean of its divisors is an integer number (400923750).
Almost surely, 268368707456 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68368707456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115466040000).
68368707456 is an abundant number, since it is smaller than the sum of its proper divisors (162563372544).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68368707456 is a wasteful number, since it uses less digits than its factorization.
68368707456 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 311 (or 261 counting only the distinct ones).
The product of its (nonzero) digits is 40642560, while the sum is 60.
The spelling of 68368707456 in words is "sixty-eight billion, three hundred sixty-eight million, seven hundred seven thousand, four hundred fifty-six".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.068 sec. • engine limits •