Base | Representation |
---|---|
bin | 111111011101100110… |
… | …101000011101111001 |
3 | 20111212221221122122111 |
4 | 333131212220131321 |
5 | 2104023423321101 |
6 | 51145412052321 |
7 | 4631426566204 |
oct | 773546503571 |
9 | 214787848574 |
10 | 68142401401 |
11 | 26998677818 |
12 | 112589040a1 |
13 | 656c63b699 |
14 | 342602893b |
15 | 1b8c4cb251 |
hex | fdd9a8779 |
68142401401 has 8 divisors (see below), whose sum is σ = 75948187680. Its totient is φ = 60758549568.
The previous prime is 68142401381. The next prime is 68142401407. The reversal of 68142401401 is 10410424186.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-68142401401 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (68142401407) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105483271 + ... + 105483916.
It is an arithmetic number, because the mean of its divisors is an integer number (9493523460).
Almost surely, 268142401401 is an apocalyptic number.
It is an amenable number.
68142401401 is a deficient number, since it is larger than the sum of its proper divisors (7805786279).
68142401401 is a wasteful number, since it uses less digits than its factorization.
68142401401 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 210967223.
The product of its (nonzero) digits is 6144, while the sum is 31.
Adding to 68142401401 its reverse (10410424186), we get a palindrome (78552825587).
The spelling of 68142401401 in words is "sixty-eight billion, one hundred forty-two million, four hundred one thousand, four hundred one".
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