Base | Representation |
---|---|
bin | 111111110101001110… |
… | …110000010111001101 |
3 | 20112220120211120002021 |
4 | 333311032300113031 |
5 | 2110331412423334 |
6 | 51253012130141 |
7 | 4644312102064 |
oct | 776516602715 |
9 | 215816746067 |
10 | 68538795469 |
11 | 270813aa521 |
12 | 11349606951 |
13 | 66037b98a1 |
14 | 34629311db |
15 | 1bb21cb3b4 |
hex | ff53b05cd |
68538795469 has 8 divisors (see below), whose sum is σ = 69367701312. Its totient is φ = 67713791040.
The previous prime is 68538795439. The next prime is 68538795473. The reversal of 68538795469 is 96459783586.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 68538795469 - 215 = 68538762701 is a prime.
It is a super-2 number, since 2×685387954692 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 68538795398 and 68538795407.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68538795419) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939999 + ... + 1010284.
It is an arithmetic number, because the mean of its divisors is an integer number (8670962664).
Almost surely, 268538795469 is an apocalyptic number.
It is an amenable number.
68538795469 is a deficient number, since it is larger than the sum of its proper divisors (828905843).
68538795469 is a wasteful number, since it uses less digits than its factorization.
68538795469 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1950707.
The product of its digits is 391910400, while the sum is 70.
The spelling of 68538795469 in words is "sixty-eight billion, five hundred thirty-eight million, seven hundred ninety-five thousand, four hundred sixty-nine".
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