Base | Representation |
---|---|
bin | 100000000110111111… |
… | …0111110010101010111 |
3 | 20120222112021122102102 |
4 | 1000031332332111113 |
5 | 2112204221320131 |
6 | 51402125232315 |
7 | 4660514040560 |
oct | 1001576762527 |
9 | 216875248372 |
10 | 68954088791 |
11 | 27274870545 |
12 | 1144470269b |
13 | 666b854193 |
14 | 34a1b57167 |
15 | 1bd88b11cb |
hex | 100dfbe557 |
68954088791 has 16 divisors (see below), whose sum is σ = 79402306368. Its totient is φ = 58656960000.
The previous prime is 68954088769. The next prime is 68954088799. The reversal of 68954088791 is 19788045986.
It is a cyclic number.
It is not a de Polignac number, because 68954088791 - 26 = 68954088727 is a prime.
It is a super-2 number, since 2×689540887912 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68954088799) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424541 + ... + 564041.
It is an arithmetic number, because the mean of its divisors is an integer number (4962644148).
Almost surely, 268954088791 is an apocalyptic number.
68954088791 is a deficient number, since it is larger than the sum of its proper divisors (10448217577).
68954088791 is a wasteful number, since it uses less digits than its factorization.
68954088791 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 140042.
The product of its (nonzero) digits is 34836480, while the sum is 65.
The spelling of 68954088791 in words is "sixty-eight billion, nine hundred fifty-four million, eighty-eight thousand, seven hundred ninety-one".
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