Base | Representation |
---|---|
bin | 111111111101010111… |
… | …001100010011111111 |
3 | 20120021002112212222121 |
4 | 333331113030103333 |
5 | 2111121324143311 |
6 | 51314324223411 |
7 | 4650556531243 |
oct | 777527142377 |
9 | 216232485877 |
10 | 68675224831 |
11 | 27141412964 |
12 | 1138723ab67 |
13 | 6625b46915 |
14 | 3476ac6423 |
15 | 1bbe179b71 |
hex | ffd5cc4ff |
68675224831 has 2 divisors, whose sum is σ = 68675224832. Its totient is φ = 68675224830.
The previous prime is 68675224811. The next prime is 68675224867. The reversal of 68675224831 is 13842257686.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 68675224831 - 215 = 68675192063 is a prime.
It is a super-2 number, since 2×686752248312 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (68675224811) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34337612415 + 34337612416.
It is an arithmetic number, because the mean of its divisors is an integer number (34337612416).
Almost surely, 268675224831 is an apocalyptic number.
68675224831 is a deficient number, since it is larger than the sum of its proper divisors (1).
68675224831 is an equidigital number, since it uses as much as digits as its factorization.
68675224831 is an evil number, because the sum of its binary digits is even.
The product of its digits is 3870720, while the sum is 52.
The spelling of 68675224831 in words is "sixty-eight billion, six hundred seventy-five million, two hundred twenty-four thousand, eight hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.065 sec. • engine limits •