Base | Representation |
---|---|
bin | 100000000111011111… |
… | …1001000010110001001 |
3 | 20121000200221002200200 |
4 | 1000032333020112021 |
5 | 2112223023011032 |
6 | 51403525522413 |
7 | 4661110015365 |
oct | 1001677102611 |
9 | 217020832620 |
10 | 68970907017 |
11 | 27283308301 |
12 | 1144a273409 |
13 | 66721922ac |
14 | 34a40942a5 |
15 | 1bda0d447c |
hex | 100efc8589 |
68970907017 has 12 divisors (see below), whose sum is σ = 100506278964. Its totient is φ = 45573696000.
The previous prime is 68970906997. The next prime is 68970907021. The reversal of 68970907017 is 71070907986.
It can be written as a sum of positive squares in 2 ways, for example, as 34248684096 + 34722222921 = 185064^2 + 186339^2 .
It is not a de Polignac number, because 68970907017 - 234 = 51791037833 is a prime.
It is not an unprimeable number, because it can be changed into a prime (68970907097) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33907984 + ... + 33910017.
It is an arithmetic number, because the mean of its divisors is an integer number (8375523247).
Almost surely, 268970907017 is an apocalyptic number.
It is an amenable number.
68970907017 is a deficient number, since it is larger than the sum of its proper divisors (31535371947).
68970907017 is a wasteful number, since it uses less digits than its factorization.
68970907017 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 67818120 (or 67818117 counting only the distinct ones).
The product of its (nonzero) digits is 1333584, while the sum is 54.
The spelling of 68970907017 in words is "sixty-eight billion, nine hundred seventy million, nine hundred seven thousand, seventeen".
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