I cannot give you a quote specifically about number theory. But I would point you towards the discipline of ethnomathematics if such things interests you. The wikipedia article seems alright.[0]<p>[0](For your convenience) <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ethnomathematics" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ethnomathematics</a>